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Differential D149315

[ARM] Don't allocate memory if free space in segmented stack is just enough.
ClosedPublic

Authored by ZhiyaoMa98 on Apr 26 2023, 6:08 PM.

Details

Reviewers
john.brawn
efriedma
Commits
rG1d0ccebcd725: [ARM] Don't allocate memory if free space in segmented stack is just enough
Summary

Assuming that the stack grows downwards, it is fine if the stack pointer is exactly at the stacklet boundary. We should use less-or-equal condition when deciding whether to skip new memory allocation.

Diff Detail

Event Timeline

ZhiyaoMa98 created this revision.Apr 26 2023, 6:08 PM
Herald added a project: Restricted Project. · View Herald TranscriptApr 26 2023, 6:08 PM
Herald added subscribers: hiraditya, kristof.beyls. · View Herald Transcript
ZhiyaoMa98 requested review of this revision.Apr 26 2023, 6:08 PM
Herald added a project: Restricted Project. · View Herald TranscriptApr 26 2023, 6:08 PM
john.brawn accepted this revision.Apr 28 2023, 3:52 AM

LGTM.

This revision is now accepted and ready to land.Apr 28 2023, 3:52 AM
ZhiyaoMa98 added a comment.Apr 28 2023, 9:58 PM

Thanks. Since I don't have push permission, I'd appreciate if you could help me make the commit.

Name: Zhiyao Ma
Email: zhiyao.ma.98@gmail.com

This revision was landed with ongoing or failed builds.May 2 2023, 5:10 AM
Closed by commit rG1d0ccebcd725: [ARM] Don't allocate memory if free space in segmented stack is just enough (authored by ZhiyaoMa98, committed by john.brawn). · Explain Why
This revision was automatically updated to reflect the committed changes.
john.brawn added a commit: rG1d0ccebcd725: [ARM] Don't allocate memory if free space in segmented stack is just enough.

Revision Contents

PathSize
llvm/
lib/
Target/
ARM/
10 lines
test/
CodeGen/
ARM/
2 lines
4 lines
20 lines
Thumb/
4 lines
20 lines
Thumb2/
12 lines

Diff 517412

llvm/lib/Target/ARM/ARMFrameLowering.cpp

Show First 20 Lines • Show All 3,162 Lines • ▼ Show 20 Linesvoid ARMFrameLowering::adjustForSegmentedStacks(
// Compare stack limit with stack size requested. // Compare stack limit with stack size requested.
// cmp SR0, SR1 // cmp SR0, SR1
Opcode = Thumb ? ARM::tCMPr : ARM::CMPrr; Opcode = Thumb ? ARM::tCMPr : ARM::CMPrr;
BuildMI(GetMBB, DL, TII.get(Opcode)) BuildMI(GetMBB, DL, TII.get(Opcode))
.addReg(ScratchReg0) .addReg(ScratchReg0)
.addReg(ScratchReg1) .addReg(ScratchReg1)
.add(predOps(ARMCC::AL)); .add(predOps(ARMCC::AL));
// This jump is taken if StackLimit < SP - stack required. // This jump is taken if StackLimit <= SP - stack required.
Opcode = Thumb ? ARM::tBcc : ARM::Bcc; Opcode = Thumb ? ARM::tBcc : ARM::Bcc;
BuildMI(GetMBB, DL, TII.get(Opcode)).addMBB(PostStackMBB) BuildMI(GetMBB, DL, TII.get(Opcode))
.addImm(ARMCC::LO) .addMBB(PostStackMBB)
.addImm(ARMCC::LS)
.addReg(ARM::CPSR); .addReg(ARM::CPSR);
// Calling __morestack(StackSize, Size of stack arguments). // Calling __morestack(StackSize, Size of stack arguments).
// __morestack knows that the stack size requested is in SR0(r4) // __morestack knows that the stack size requested is in SR0(r4)
// and amount size of stack arguments is in SR1(r5). // and amount size of stack arguments is in SR1(r5).
// Pass first argument for the __morestack by Scratch Register #0. // Pass first argument for the __morestack by Scratch Register #0.
// The amount size of stack required // The amount size of stack required
if (Thumb) { if (Thumb) {
if (AlignedStackSize < 256) { if (AlignedStackSize < 256) {
▲ Show 20 Lines • Show All 202 Lines • Show Last 20 Lines

llvm/test/CodeGen/ARM/debug-segmented-stacks.ll

Show All 14 Lines
; ARM-linux: push {r4, r5} ; ARM-linux: push {r4, r5}
; ARM-linux: .cfi_def_cfa_offset 8 ; ARM-linux: .cfi_def_cfa_offset 8
; ARM-linux: .cfi_offset r5, -4 ; ARM-linux: .cfi_offset r5, -4
; ARM-linux: .cfi_offset r4, -8 ; ARM-linux: .cfi_offset r4, -8
; ARM-linux-NEXT: mrc p15, #0, r4, c13, c0, #3 ; ARM-linux-NEXT: mrc p15, #0, r4, c13, c0, #3
; ARM-linux-NEXT: mov r5, sp ; ARM-linux-NEXT: mov r5, sp
; ARM-linux-NEXT: ldr r4, [r4, #4] ; ARM-linux-NEXT: ldr r4, [r4, #4]
; ARM-linux-NEXT: cmp r4, r5 ; ARM-linux-NEXT: cmp r4, r5
; ARM-linux-NEXT: blo .LBB0_2 ; ARM-linux-NEXT: bls .LBB0_2
; ARM-linux: mov r4, #48 ; ARM-linux: mov r4, #48
; ARM-linux-NEXT: mov r5, #0 ; ARM-linux-NEXT: mov r5, #0
; ARM-linux-NEXT: stmdb sp!, {lr} ; ARM-linux-NEXT: stmdb sp!, {lr}
; ARM-linux: .cfi_def_cfa_offset 12 ; ARM-linux: .cfi_def_cfa_offset 12
; ARM-linux: .cfi_offset lr, -12 ; ARM-linux: .cfi_offset lr, -12
; ARM-linux-NEXT: bl __morestack ; ARM-linux-NEXT: bl __morestack
; ARM-linux-NEXT: ldm sp!, {lr} ; ARM-linux-NEXT: ldm sp!, {lr}
▲ Show 20 Lines • Show All 48 Lines • Show Last 20 Lines

llvm/test/CodeGen/ARM/segmented-stacks-dynamic.ll

Show All 21 Lines
; ARM-linux: test_basic: ; ARM-linux: test_basic:
; ARM-linux: push {r4, r5} ; ARM-linux: push {r4, r5}
; ARM-linux-NEXT: mrc p15, #0, r4, c13, c0, #3 ; ARM-linux-NEXT: mrc p15, #0, r4, c13, c0, #3
; ARM-linux-NEXT: mov r5, sp ; ARM-linux-NEXT: mov r5, sp
; ARM-linux-NEXT: ldr r4, [r4, #4] ; ARM-linux-NEXT: ldr r4, [r4, #4]
; ARM-linux-NEXT: cmp r4, r5 ; ARM-linux-NEXT: cmp r4, r5
; ARM-linux-NEXT: blo .LBB0_2 ; ARM-linux-NEXT: bls .LBB0_2
; ARM-linux: mov r4, #16 ; ARM-linux: mov r4, #16
; ARM-linux-NEXT: mov r5, #0 ; ARM-linux-NEXT: mov r5, #0
; ARM-linux-NEXT: stmdb sp!, {lr} ; ARM-linux-NEXT: stmdb sp!, {lr}
; ARM-linux-NEXT: bl __morestack ; ARM-linux-NEXT: bl __morestack
; ARM-linux-NEXT: ldm sp!, {lr} ; ARM-linux-NEXT: ldm sp!, {lr}
; ARM-linux-NEXT: pop {r4, r5} ; ARM-linux-NEXT: pop {r4, r5}
; ARM-linux-NEXT: bx lr ; ARM-linux-NEXT: bx lr
; ARM-linux: pop {r4, r5} ; ARM-linux: pop {r4, r5}
; ARM-android: test_basic: ; ARM-android: test_basic:
; ARM-android: push {r4, r5} ; ARM-android: push {r4, r5}
; ARM-android-NEXT: mrc p15, #0, r4, c13, c0, #3 ; ARM-android-NEXT: mrc p15, #0, r4, c13, c0, #3
; ARM-android-NEXT: mov r5, sp ; ARM-android-NEXT: mov r5, sp
; ARM-android-NEXT: ldr r4, [r4, #252] ; ARM-android-NEXT: ldr r4, [r4, #252]
; ARM-android-NEXT: cmp r4, r5 ; ARM-android-NEXT: cmp r4, r5
; ARM-android-NEXT: blo .LBB0_2 ; ARM-android-NEXT: bls .LBB0_2
; ARM-android: mov r4, #16 ; ARM-android: mov r4, #16
; ARM-android-NEXT: mov r5, #0 ; ARM-android-NEXT: mov r5, #0
; ARM-android-NEXT: stmdb sp!, {lr} ; ARM-android-NEXT: stmdb sp!, {lr}
; ARM-android-NEXT: bl __morestack ; ARM-android-NEXT: bl __morestack
; ARM-android-NEXT: ldm sp!, {lr} ; ARM-android-NEXT: ldm sp!, {lr}
; ARM-android-NEXT: pop {r4, r5} ; ARM-android-NEXT: pop {r4, r5}
; ARM-android-NEXT: bx lr ; ARM-android-NEXT: bx lr
; ARM-android: pop {r4, r5} ; ARM-android: pop {r4, r5}
} }
attributes #0 = { "split-stack" } attributes #0 = { "split-stack" }

llvm/test/CodeGen/ARM/segmented-stacks.ll

Show All 15 Lines
; ARM-linux-LABEL: test_basic: ; ARM-linux-LABEL: test_basic:
; ARM-linux: push {r4, r5} ; ARM-linux: push {r4, r5}
; ARM-linux-NEXT: mrc p15, #0, r4, c13, c0, #3 ; ARM-linux-NEXT: mrc p15, #0, r4, c13, c0, #3
; ARM-linux-NEXT: mov r5, sp ; ARM-linux-NEXT: mov r5, sp
; ARM-linux-NEXT: ldr r4, [r4, #4] ; ARM-linux-NEXT: ldr r4, [r4, #4]
; ARM-linux-NEXT: cmp r4, r5 ; ARM-linux-NEXT: cmp r4, r5
; ARM-linux-NEXT: blo .LBB0_2 ; ARM-linux-NEXT: bls .LBB0_2
; ARM-linux: mov r4, #48 ; ARM-linux: mov r4, #48
; ARM-linux-NEXT: mov r5, #0 ; ARM-linux-NEXT: mov r5, #0
; ARM-linux-NEXT: stmdb sp!, {lr} ; ARM-linux-NEXT: stmdb sp!, {lr}
; ARM-linux-NEXT: bl __morestack ; ARM-linux-NEXT: bl __morestack
; ARM-linux-NEXT: ldm sp!, {lr} ; ARM-linux-NEXT: ldm sp!, {lr}
; ARM-linux-NEXT: pop {r4, r5} ; ARM-linux-NEXT: pop {r4, r5}
; ARM-linux-NEXT: bx lr ; ARM-linux-NEXT: bx lr
; ARM-linux: pop {r4, r5} ; ARM-linux: pop {r4, r5}
; ARM-android-LABEL: test_basic: ; ARM-android-LABEL: test_basic:
; ARM-android: push {r4, r5} ; ARM-android: push {r4, r5}
; ARM-android-NEXT: mrc p15, #0, r4, c13, c0, #3 ; ARM-android-NEXT: mrc p15, #0, r4, c13, c0, #3
; ARM-android-NEXT: mov r5, sp ; ARM-android-NEXT: mov r5, sp
; ARM-android-NEXT: ldr r4, [r4, #252] ; ARM-android-NEXT: ldr r4, [r4, #252]
; ARM-android-NEXT: cmp r4, r5 ; ARM-android-NEXT: cmp r4, r5
; ARM-android-NEXT: blo .LBB0_2 ; ARM-android-NEXT: bls .LBB0_2
; ARM-android: mov r4, #48 ; ARM-android: mov r4, #48
; ARM-android-NEXT: mov r5, #0 ; ARM-android-NEXT: mov r5, #0
; ARM-android-NEXT: stmdb sp!, {lr} ; ARM-android-NEXT: stmdb sp!, {lr}
; ARM-android-NEXT: bl __morestack ; ARM-android-NEXT: bl __morestack
; ARM-android-NEXT: ldm sp!, {lr} ; ARM-android-NEXT: ldm sp!, {lr}
; ARM-android-NEXT: pop {r4, r5} ; ARM-android-NEXT: pop {r4, r5}
; ARM-android-NEXT: bx lr ; ARM-android-NEXT: bx lr
Show All 11 Lines
; ARM-linux-LABEL: test_nested: ; ARM-linux-LABEL: test_nested:
; ARM-linux: push {r4, r5} ; ARM-linux: push {r4, r5}
; ARM-linux-NEXT: mrc p15, #0, r4, c13, c0, #3 ; ARM-linux-NEXT: mrc p15, #0, r4, c13, c0, #3
; ARM-linux-NEXT: mov r5, sp ; ARM-linux-NEXT: mov r5, sp
; ARM-linux-NEXT: ldr r4, [r4, #4] ; ARM-linux-NEXT: ldr r4, [r4, #4]
; ARM-linux-NEXT: cmp r4, r5 ; ARM-linux-NEXT: cmp r4, r5
; ARM-linux-NEXT: blo .LBB1_2 ; ARM-linux-NEXT: bls .LBB1_2
; ARM-linux: mov r4, #56 ; ARM-linux: mov r4, #56
; ARM-linux-NEXT: mov r5, #0 ; ARM-linux-NEXT: mov r5, #0
; ARM-linux-NEXT: stmdb sp!, {lr} ; ARM-linux-NEXT: stmdb sp!, {lr}
; ARM-linux-NEXT: bl __morestack ; ARM-linux-NEXT: bl __morestack
; ARM-linux-NEXT: ldm sp!, {lr} ; ARM-linux-NEXT: ldm sp!, {lr}
; ARM-linux-NEXT: pop {r4, r5} ; ARM-linux-NEXT: pop {r4, r5}
; ARM-linux-NEXT: bx lr ; ARM-linux-NEXT: bx lr
; ARM-linux: pop {r4, r5} ; ARM-linux: pop {r4, r5}
; ARM-android-LABEL: test_nested: ; ARM-android-LABEL: test_nested:
; ARM-android: push {r4, r5} ; ARM-android: push {r4, r5}
; ARM-android-NEXT: mrc p15, #0, r4, c13, c0, #3 ; ARM-android-NEXT: mrc p15, #0, r4, c13, c0, #3
; ARM-android-NEXT: mov r5, sp ; ARM-android-NEXT: mov r5, sp
; ARM-android-NEXT: ldr r4, [r4, #252] ; ARM-android-NEXT: ldr r4, [r4, #252]
; ARM-android-NEXT: cmp r4, r5 ; ARM-android-NEXT: cmp r4, r5
; ARM-android-NEXT: blo .LBB1_2 ; ARM-android-NEXT: bls .LBB1_2
; ARM-android: mov r4, #56 ; ARM-android: mov r4, #56
; ARM-android-NEXT: mov r5, #0 ; ARM-android-NEXT: mov r5, #0
; ARM-android-NEXT: stmdb sp!, {lr} ; ARM-android-NEXT: stmdb sp!, {lr}
; ARM-android-NEXT: bl __morestack ; ARM-android-NEXT: bl __morestack
; ARM-android-NEXT: ldm sp!, {lr} ; ARM-android-NEXT: ldm sp!, {lr}
; ARM-android-NEXT: pop {r4, r5} ; ARM-android-NEXT: pop {r4, r5}
; ARM-android-NEXT: bx lr ; ARM-android-NEXT: bx lr
Show All 10 Lines
; ARM-linux-LABEL: test_large: ; ARM-linux-LABEL: test_large:
; ARM-linux: push {r4, r5} ; ARM-linux: push {r4, r5}
; ARM-linux-NEXT: ldr r4, .LCPI2_0 ; ARM-linux-NEXT: ldr r4, .LCPI2_0
; ARM-linux-NEXT: sub r5, sp, r4 ; ARM-linux-NEXT: sub r5, sp, r4
; ARM-linux-NEXT: mrc p15, #0, r4, c13, c0, #3 ; ARM-linux-NEXT: mrc p15, #0, r4, c13, c0, #3
; ARM-linux-NEXT: ldr r4, [r4, #4] ; ARM-linux-NEXT: ldr r4, [r4, #4]
; ARM-linux-NEXT: cmp r4, r5 ; ARM-linux-NEXT: cmp r4, r5
; ARM-linux-NEXT: blo .LBB2_2 ; ARM-linux-NEXT: bls .LBB2_2
; ARM-linux: ldr r4, .LCPI2_0 ; ARM-linux: ldr r4, .LCPI2_0
; ARM-linux-NEXT: mov r5, #0 ; ARM-linux-NEXT: mov r5, #0
; ARM-linux-NEXT: stmdb sp!, {lr} ; ARM-linux-NEXT: stmdb sp!, {lr}
; ARM-linux-NEXT: bl __morestack ; ARM-linux-NEXT: bl __morestack
; ARM-linux-NEXT: ldm sp!, {lr} ; ARM-linux-NEXT: ldm sp!, {lr}
; ARM-linux-NEXT: pop {r4, r5} ; ARM-linux-NEXT: pop {r4, r5}
; ARM-linux-NEXT: bx lr ; ARM-linux-NEXT: bx lr
; ARM-linux: pop {r4, r5} ; ARM-linux: pop {r4, r5}
; ARM-linux: .LCPI2_0: ; ARM-linux: .LCPI2_0:
; ARM-linux-NEXT: .long 40192 ; ARM-linux-NEXT: .long 40192
; ARM-android-LABEL: test_large: ; ARM-android-LABEL: test_large:
; ARM-android: push {r4, r5} ; ARM-android: push {r4, r5}
; ARM-android-NEXT: ldr r4, .LCPI2_0 ; ARM-android-NEXT: ldr r4, .LCPI2_0
; ARM-android-NEXT: sub r5, sp, r4 ; ARM-android-NEXT: sub r5, sp, r4
; ARM-android-NEXT: mrc p15, #0, r4, c13, c0, #3 ; ARM-android-NEXT: mrc p15, #0, r4, c13, c0, #3
; ARM-android-NEXT: ldr r4, [r4, #252] ; ARM-android-NEXT: ldr r4, [r4, #252]
; ARM-android-NEXT: cmp r4, r5 ; ARM-android-NEXT: cmp r4, r5
; ARM-android-NEXT: blo .LBB2_2 ; ARM-android-NEXT: bls .LBB2_2
; ARM-android: ldr r4, .LCPI2_0 ; ARM-android: ldr r4, .LCPI2_0
; ARM-android-NEXT: mov r5, #0 ; ARM-android-NEXT: mov r5, #0
; ARM-android-NEXT: stmdb sp!, {lr} ; ARM-android-NEXT: stmdb sp!, {lr}
; ARM-android-NEXT: bl __morestack ; ARM-android-NEXT: bl __morestack
; ARM-android-NEXT: ldm sp!, {lr} ; ARM-android-NEXT: ldm sp!, {lr}
; ARM-android-NEXT: pop {r4, r5} ; ARM-android-NEXT: pop {r4, r5}
; ARM-android-NEXT: bx lr ; ARM-android-NEXT: bx lr
Show All 12 Lines
; ARM-linux-LABEL: test_fastcc: ; ARM-linux-LABEL: test_fastcc:
; ARM-linux: push {r4, r5} ; ARM-linux: push {r4, r5}
; ARM-linux-NEXT: mrc p15, #0, r4, c13, c0, #3 ; ARM-linux-NEXT: mrc p15, #0, r4, c13, c0, #3
; ARM-linux-NEXT: mov r5, sp ; ARM-linux-NEXT: mov r5, sp
; ARM-linux-NEXT: ldr r4, [r4, #4] ; ARM-linux-NEXT: ldr r4, [r4, #4]
; ARM-linux-NEXT: cmp r4, r5 ; ARM-linux-NEXT: cmp r4, r5
; ARM-linux-NEXT: blo .LBB3_2 ; ARM-linux-NEXT: bls .LBB3_2
; ARM-linux: mov r4, #48 ; ARM-linux: mov r4, #48
; ARM-linux-NEXT: mov r5, #0 ; ARM-linux-NEXT: mov r5, #0
; ARM-linux-NEXT: stmdb sp!, {lr} ; ARM-linux-NEXT: stmdb sp!, {lr}
; ARM-linux-NEXT: bl __morestack ; ARM-linux-NEXT: bl __morestack
; ARM-linux-NEXT: ldm sp!, {lr} ; ARM-linux-NEXT: ldm sp!, {lr}
; ARM-linux-NEXT: pop {r4, r5} ; ARM-linux-NEXT: pop {r4, r5}
; ARM-linux-NEXT: bx lr ; ARM-linux-NEXT: bx lr
; ARM-linux: pop {r4, r5} ; ARM-linux: pop {r4, r5}
; ARM-android-LABEL: test_fastcc: ; ARM-android-LABEL: test_fastcc:
; ARM-android: push {r4, r5} ; ARM-android: push {r4, r5}
; ARM-android-NEXT: mrc p15, #0, r4, c13, c0, #3 ; ARM-android-NEXT: mrc p15, #0, r4, c13, c0, #3
; ARM-android-NEXT: mov r5, sp ; ARM-android-NEXT: mov r5, sp
; ARM-android-NEXT: ldr r4, [r4, #252] ; ARM-android-NEXT: ldr r4, [r4, #252]
; ARM-android-NEXT: cmp r4, r5 ; ARM-android-NEXT: cmp r4, r5
; ARM-android-NEXT: blo .LBB3_2 ; ARM-android-NEXT: bls .LBB3_2
; ARM-android: mov r4, #48 ; ARM-android: mov r4, #48
; ARM-android-NEXT: mov r5, #0 ; ARM-android-NEXT: mov r5, #0
; ARM-android-NEXT: stmdb sp!, {lr} ; ARM-android-NEXT: stmdb sp!, {lr}
; ARM-android-NEXT: bl __morestack ; ARM-android-NEXT: bl __morestack
; ARM-android-NEXT: ldm sp!, {lr} ; ARM-android-NEXT: ldm sp!, {lr}
; ARM-android-NEXT: pop {r4, r5} ; ARM-android-NEXT: pop {r4, r5}
; ARM-android-NEXT: bx lr ; ARM-android-NEXT: bx lr
Show All 10 Lines
; ARM-linux-LABEL: test_fastcc_large: ; ARM-linux-LABEL: test_fastcc_large:
; ARM-linux: push {r4, r5} ; ARM-linux: push {r4, r5}
; ARM-linux-NEXT: ldr r4, .LCPI4_0 ; ARM-linux-NEXT: ldr r4, .LCPI4_0
; ARM-linux-NEXT: sub r5, sp, r4 ; ARM-linux-NEXT: sub r5, sp, r4
; ARM-linux-NEXT: mrc p15, #0, r4, c13, c0, #3 ; ARM-linux-NEXT: mrc p15, #0, r4, c13, c0, #3
; ARM-linux-NEXT: ldr r4, [r4, #4] ; ARM-linux-NEXT: ldr r4, [r4, #4]
; ARM-linux-NEXT: cmp r4, r5 ; ARM-linux-NEXT: cmp r4, r5
; ARM-linux-NEXT: blo .LBB4_2 ; ARM-linux-NEXT: bls .LBB4_2
; ARM-linux: ldr r4, .LCPI4_0 ; ARM-linux: ldr r4, .LCPI4_0
; ARM-linux-NEXT: mov r5, #0 ; ARM-linux-NEXT: mov r5, #0
; ARM-linux-NEXT: stmdb sp!, {lr} ; ARM-linux-NEXT: stmdb sp!, {lr}
; ARM-linux-NEXT: bl __morestack ; ARM-linux-NEXT: bl __morestack
; ARM-linux-NEXT: ldm sp!, {lr} ; ARM-linux-NEXT: ldm sp!, {lr}
; ARM-linux-NEXT: pop {r4, r5} ; ARM-linux-NEXT: pop {r4, r5}
; ARM-linux-NEXT: bx lr ; ARM-linux-NEXT: bx lr
; ARM-linux: pop {r4, r5} ; ARM-linux: pop {r4, r5}
; ARM-linux: .LCPI4_0: ; ARM-linux: .LCPI4_0:
; ARM-linux-NEXT: .long 40192 ; ARM-linux-NEXT: .long 40192
; ARM-android-LABEL: test_fastcc_large: ; ARM-android-LABEL: test_fastcc_large:
; ARM-android: push {r4, r5} ; ARM-android: push {r4, r5}
; ARM-android-NEXT: ldr r4, .LCPI4_0 ; ARM-android-NEXT: ldr r4, .LCPI4_0
; ARM-android-NEXT: sub r5, sp, r4 ; ARM-android-NEXT: sub r5, sp, r4
; ARM-android-NEXT: mrc p15, #0, r4, c13, c0, #3 ; ARM-android-NEXT: mrc p15, #0, r4, c13, c0, #3
; ARM-android-NEXT: ldr r4, [r4, #252] ; ARM-android-NEXT: ldr r4, [r4, #252]
; ARM-android-NEXT: cmp r4, r5 ; ARM-android-NEXT: cmp r4, r5
; ARM-android-NEXT: blo .LBB4_2 ; ARM-android-NEXT: bls .LBB4_2
; ARM-android: ldr r4, .LCPI4_0 ; ARM-android: ldr r4, .LCPI4_0
; ARM-android-NEXT: mov r5, #0 ; ARM-android-NEXT: mov r5, #0
; ARM-android-NEXT: stmdb sp!, {lr} ; ARM-android-NEXT: stmdb sp!, {lr}
; ARM-android-NEXT: bl __morestack ; ARM-android-NEXT: bl __morestack
; ARM-android-NEXT: ldm sp!, {lr} ; ARM-android-NEXT: ldm sp!, {lr}
; ARM-android-NEXT: pop {r4, r5} ; ARM-android-NEXT: pop {r4, r5}
; ARM-android-NEXT: bx lr ; ARM-android-NEXT: bx lr
▲ Show 20 Lines • Show All 57 Lines • Show Last 20 Lines

llvm/test/CodeGen/Thumb/segmented-stacks-dynamic.ll

Show All 21 Lines
; Thumb-linux: test_basic: ; Thumb-linux: test_basic:
; Thumb-linux: push {r4, r5} ; Thumb-linux: push {r4, r5}
; Thumb-linux: mov r5, sp ; Thumb-linux: mov r5, sp
; Thumb-linux-NEXT: ldr r4, .LCPI0_0 ; Thumb-linux-NEXT: ldr r4, .LCPI0_0
; Thumb-linux-NEXT: ldr r4, [r4] ; Thumb-linux-NEXT: ldr r4, [r4]
; Thumb-linux-NEXT: cmp r4, r5 ; Thumb-linux-NEXT: cmp r4, r5
; Thumb-linux-NEXT: blo .LBB0_2 ; Thumb-linux-NEXT: bls .LBB0_2
; Thumb-linux: mov r4, #16 ; Thumb-linux: mov r4, #16
; Thumb-linux-NEXT: mov r5, #0 ; Thumb-linux-NEXT: mov r5, #0
; Thumb-linux-NEXT: push {lr} ; Thumb-linux-NEXT: push {lr}
; Thumb-linux-NEXT: bl __morestack ; Thumb-linux-NEXT: bl __morestack
; Thumb-linux-NEXT: pop {r4} ; Thumb-linux-NEXT: pop {r4}
; Thumb-linux-NEXT: mov lr, r4 ; Thumb-linux-NEXT: mov lr, r4
; Thumb-linux-NEXT: pop {r4, r5} ; Thumb-linux-NEXT: pop {r4, r5}
; Thumb-linux-NEXT: bx lr ; Thumb-linux-NEXT: bx lr
; Thumb-linux: pop {r4, r5} ; Thumb-linux: pop {r4, r5}
; Thumb-android: test_basic: ; Thumb-android: test_basic:
; Thumb-android: push {r4, r5} ; Thumb-android: push {r4, r5}
; Thumb-android: mov r5, sp ; Thumb-android: mov r5, sp
; Thumb-android-NEXT: ldr r4, .LCPI0_0 ; Thumb-android-NEXT: ldr r4, .LCPI0_0
; Thumb-android-NEXT: ldr r4, [r4] ; Thumb-android-NEXT: ldr r4, [r4]
; Thumb-android-NEXT: cmp r4, r5 ; Thumb-android-NEXT: cmp r4, r5
; Thumb-android-NEXT: blo .LBB0_2 ; Thumb-android-NEXT: bls .LBB0_2
; Thumb-android: mov r4, #16 ; Thumb-android: mov r4, #16
; Thumb-android-NEXT: mov r5, #0 ; Thumb-android-NEXT: mov r5, #0
; Thumb-android-NEXT: push {lr} ; Thumb-android-NEXT: push {lr}
; Thumb-android-NEXT: bl __morestack ; Thumb-android-NEXT: bl __morestack
; Thumb-android-NEXT: pop {r4} ; Thumb-android-NEXT: pop {r4}
; Thumb-android-NEXT: mov lr, r4 ; Thumb-android-NEXT: mov lr, r4
; Thumb-android-NEXT: pop {r4, r5} ; Thumb-android-NEXT: pop {r4, r5}
; Thumb-android-NEXT: bx lr ; Thumb-android-NEXT: bx lr
; Thumb-android: pop {r4, r5} ; Thumb-android: pop {r4, r5}
} }
attributes #0 = { "split-stack" } attributes #0 = { "split-stack" }

llvm/test/CodeGen/Thumb/segmented-stacks.ll

Show All 13 Lines
; Thumb-android-LABEL: test_basic: ; Thumb-android-LABEL: test_basic:
; Thumb-android: push {r4, r5} ; Thumb-android: push {r4, r5}
; Thumb-android-NEXT: mov r5, sp ; Thumb-android-NEXT: mov r5, sp
; Thumb-android-NEXT: ldr r4, .LCPI0_0 ; Thumb-android-NEXT: ldr r4, .LCPI0_0
; Thumb-android-NEXT: ldr r4, [r4] ; Thumb-android-NEXT: ldr r4, [r4]
; Thumb-android-NEXT: cmp r4, r5 ; Thumb-android-NEXT: cmp r4, r5
; Thumb-android-NEXT: blo .LBB0_2 ; Thumb-android-NEXT: bls .LBB0_2
; Thumb-android: mov r4, #48 ; Thumb-android: mov r4, #48
; Thumb-android-NEXT: mov r5, #0 ; Thumb-android-NEXT: mov r5, #0
; Thumb-android-NEXT: push {lr} ; Thumb-android-NEXT: push {lr}
; Thumb-android-NEXT: bl __morestack ; Thumb-android-NEXT: bl __morestack
; Thumb-android-NEXT: pop {r4} ; Thumb-android-NEXT: pop {r4}
; Thumb-android-NEXT: mov lr, r4 ; Thumb-android-NEXT: mov lr, r4
; Thumb-android-NEXT: pop {r4, r5} ; Thumb-android-NEXT: pop {r4, r5}
; Thumb-android-NEXT: bx lr ; Thumb-android-NEXT: bx lr
; Thumb-android: pop {r4, r5} ; Thumb-android: pop {r4, r5}
; Thumb-android: .p2align 2 ; Thumb-android: .p2align 2
; Thumb-android: .LCPI0_0: ; Thumb-android: .LCPI0_0:
; Thumb-android-NEXT: .long __STACK_LIMIT ; Thumb-android-NEXT: .long __STACK_LIMIT
; Thumb-linux-LABEL: test_basic: ; Thumb-linux-LABEL: test_basic:
; Thumb-linux: push {r4, r5} ; Thumb-linux: push {r4, r5}
; Thumb-linux-NEXT: mov r5, sp ; Thumb-linux-NEXT: mov r5, sp
; Thumb-linux-NEXT: ldr r4, .LCPI0_0 ; Thumb-linux-NEXT: ldr r4, .LCPI0_0
; Thumb-linux-NEXT: ldr r4, [r4] ; Thumb-linux-NEXT: ldr r4, [r4]
; Thumb-linux-NEXT: cmp r4, r5 ; Thumb-linux-NEXT: cmp r4, r5
; Thumb-linux-NEXT: blo .LBB0_2 ; Thumb-linux-NEXT: bls .LBB0_2
; Thumb-linux: mov r4, #48 ; Thumb-linux: mov r4, #48
; Thumb-linux-NEXT: mov r5, #0 ; Thumb-linux-NEXT: mov r5, #0
; Thumb-linux-NEXT: push {lr} ; Thumb-linux-NEXT: push {lr}
; Thumb-linux-NEXT: bl __morestack ; Thumb-linux-NEXT: bl __morestack
; Thumb-linux-NEXT: pop {r4} ; Thumb-linux-NEXT: pop {r4}
; Thumb-linux-NEXT: mov lr, r4 ; Thumb-linux-NEXT: mov lr, r4
; Thumb-linux-NEXT: pop {r4, r5} ; Thumb-linux-NEXT: pop {r4, r5}
Show All 12 Lines
; Thumb-android-LABEL: test_nested: ; Thumb-android-LABEL: test_nested:
; Thumb-android: push {r4, r5} ; Thumb-android: push {r4, r5}
; Thumb-android-NEXT: mov r5, sp ; Thumb-android-NEXT: mov r5, sp
; Thumb-android-NEXT: ldr r4, .LCPI1_0 ; Thumb-android-NEXT: ldr r4, .LCPI1_0
; Thumb-android-NEXT: ldr r4, [r4] ; Thumb-android-NEXT: ldr r4, [r4]
; Thumb-android-NEXT: cmp r4, r5 ; Thumb-android-NEXT: cmp r4, r5
; Thumb-android-NEXT: blo .LBB1_2 ; Thumb-android-NEXT: bls .LBB1_2
; Thumb-android: mov r4, #56 ; Thumb-android: mov r4, #56
; Thumb-android-NEXT: mov r5, #0 ; Thumb-android-NEXT: mov r5, #0
; Thumb-android-NEXT: push {lr} ; Thumb-android-NEXT: push {lr}
; Thumb-android-NEXT: bl __morestack ; Thumb-android-NEXT: bl __morestack
; Thumb-android-NEXT: pop {r4} ; Thumb-android-NEXT: pop {r4}
; Thumb-android-NEXT: mov lr, r4 ; Thumb-android-NEXT: mov lr, r4
; Thumb-android-NEXT: pop {r4, r5} ; Thumb-android-NEXT: pop {r4, r5}
; Thumb-android-NEXT: bx lr ; Thumb-android-NEXT: bx lr
; Thumb-android: pop {r4, r5} ; Thumb-android: pop {r4, r5}
; Thumb-linux-LABEL: test_nested: ; Thumb-linux-LABEL: test_nested:
; Thumb-linux: push {r4, r5} ; Thumb-linux: push {r4, r5}
; Thumb-linux-NEXT: mov r5, sp ; Thumb-linux-NEXT: mov r5, sp
; Thumb-linux-NEXT: ldr r4, .LCPI1_0 ; Thumb-linux-NEXT: ldr r4, .LCPI1_0
; Thumb-linux-NEXT: ldr r4, [r4] ; Thumb-linux-NEXT: ldr r4, [r4]
; Thumb-linux-NEXT: cmp r4, r5 ; Thumb-linux-NEXT: cmp r4, r5
; Thumb-linux-NEXT: blo .LBB1_2 ; Thumb-linux-NEXT: bls .LBB1_2
; Thumb-linux: mov r4, #56 ; Thumb-linux: mov r4, #56
; Thumb-linux-NEXT: mov r5, #0 ; Thumb-linux-NEXT: mov r5, #0
; Thumb-linux-NEXT: push {lr} ; Thumb-linux-NEXT: push {lr}
; Thumb-linux-NEXT: bl __morestack ; Thumb-linux-NEXT: bl __morestack
; Thumb-linux-NEXT: pop {r4} ; Thumb-linux-NEXT: pop {r4}
; Thumb-linux-NEXT: mov lr, r4 ; Thumb-linux-NEXT: mov lr, r4
; Thumb-linux-NEXT: pop {r4, r5} ; Thumb-linux-NEXT: pop {r4, r5}
Show All 12 Lines
; Thumb-android: push {r4, r5} ; Thumb-android: push {r4, r5}
; Thumb-android-NEXT: mov r5, sp ; Thumb-android-NEXT: mov r5, sp
; Thumb-android-NEXT: ldr r4, .LCPI2_2 ; Thumb-android-NEXT: ldr r4, .LCPI2_2
; Thumb-android-NEXT: sub r5, r5, r4 ; Thumb-android-NEXT: sub r5, r5, r4
; Thumb-android-NEXT: ldr r4, .LCPI2_3 ; Thumb-android-NEXT: ldr r4, .LCPI2_3
; Thumb-android-NEXT: ldr r4, [r4] ; Thumb-android-NEXT: ldr r4, [r4]
; Thumb-android-NEXT: cmp r4, r5 ; Thumb-android-NEXT: cmp r4, r5
; Thumb-android-NEXT: blo .LBB2_2 ; Thumb-android-NEXT: bls .LBB2_2
; Thumb-android: ldr r4, .LCPI2_2 ; Thumb-android: ldr r4, .LCPI2_2
; Thumb-android-NEXT: mov r5, #0 ; Thumb-android-NEXT: mov r5, #0
; Thumb-android-NEXT: push {lr} ; Thumb-android-NEXT: push {lr}
; Thumb-android-NEXT: bl __morestack ; Thumb-android-NEXT: bl __morestack
; Thumb-android-NEXT: pop {r4} ; Thumb-android-NEXT: pop {r4}
; Thumb-android-NEXT: mov lr, r4 ; Thumb-android-NEXT: mov lr, r4
; Thumb-android-NEXT: pop {r4, r5} ; Thumb-android-NEXT: pop {r4, r5}
; Thumb-android-NEXT: bx lr ; Thumb-android-NEXT: bx lr
; Thumb-android: pop {r4, r5} ; Thumb-android: pop {r4, r5}
; Thumb-android: .LCPI2_2: ; Thumb-android: .LCPI2_2:
; Thumb-android-NEXT: .long 40192 ; Thumb-android-NEXT: .long 40192
; Thumb-linux-LABEL: test_large: ; Thumb-linux-LABEL: test_large:
; Thumb-linux: push {r4, r5} ; Thumb-linux: push {r4, r5}
; Thumb-linux-NEXT: mov r5, sp ; Thumb-linux-NEXT: mov r5, sp
; Thumb-linux-NEXT: ldr r4, .LCPI2_2 ; Thumb-linux-NEXT: ldr r4, .LCPI2_2
; Thumb-linux-NEXT: sub r5, r5, r4 ; Thumb-linux-NEXT: sub r5, r5, r4
; Thumb-linux-NEXT: ldr r4, .LCPI2_3 ; Thumb-linux-NEXT: ldr r4, .LCPI2_3
; Thumb-linux-NEXT: ldr r4, [r4] ; Thumb-linux-NEXT: ldr r4, [r4]
; Thumb-linux-NEXT: cmp r4, r5 ; Thumb-linux-NEXT: cmp r4, r5
; Thumb-linux-NEXT: blo .LBB2_2 ; Thumb-linux-NEXT: bls .LBB2_2
; Thumb-linux: ldr r4, .LCPI2_2 ; Thumb-linux: ldr r4, .LCPI2_2
; Thumb-linux-NEXT: mov r5, #0 ; Thumb-linux-NEXT: mov r5, #0
; Thumb-linux-NEXT: push {lr} ; Thumb-linux-NEXT: push {lr}
; Thumb-linux-NEXT: bl __morestack ; Thumb-linux-NEXT: bl __morestack
; Thumb-linux-NEXT: pop {r4} ; Thumb-linux-NEXT: pop {r4}
; Thumb-linux-NEXT: mov lr, r4 ; Thumb-linux-NEXT: mov lr, r4
; Thumb-linux-NEXT: pop {r4, r5} ; Thumb-linux-NEXT: pop {r4, r5}
Show All 10 Lines
; Thumb-android-LABEL: test_fastcc: ; Thumb-android-LABEL: test_fastcc:
; Thumb-android: push {r4, r5} ; Thumb-android: push {r4, r5}
; Thumb-android-NEXT: mov r5, sp ; Thumb-android-NEXT: mov r5, sp
; Thumb-android-NEXT: ldr r4, .LCPI3_0 ; Thumb-android-NEXT: ldr r4, .LCPI3_0
; Thumb-android-NEXT: ldr r4, [r4] ; Thumb-android-NEXT: ldr r4, [r4]
; Thumb-android-NEXT: cmp r4, r5 ; Thumb-android-NEXT: cmp r4, r5
; Thumb-android-NEXT: blo .LBB3_2 ; Thumb-android-NEXT: bls .LBB3_2
; Thumb-android: mov r4, #48 ; Thumb-android: mov r4, #48
; Thumb-android-NEXT: mov r5, #0 ; Thumb-android-NEXT: mov r5, #0
; Thumb-android-NEXT: push {lr} ; Thumb-android-NEXT: push {lr}
; Thumb-android-NEXT: bl __morestack ; Thumb-android-NEXT: bl __morestack
; Thumb-android-NEXT: pop {r4} ; Thumb-android-NEXT: pop {r4}
; Thumb-android-NEXT: mov lr, r4 ; Thumb-android-NEXT: mov lr, r4
; Thumb-android-NEXT: pop {r4, r5} ; Thumb-android-NEXT: pop {r4, r5}
; Thumb-android-NEXT: bx lr ; Thumb-android-NEXT: bx lr
; Thumb-android: pop {r4, r5} ; Thumb-android: pop {r4, r5}
; Thumb-linux-LABEL: test_fastcc: ; Thumb-linux-LABEL: test_fastcc:
; Thumb-linux: push {r4, r5} ; Thumb-linux: push {r4, r5}
; Thumb-linux-NEXT: mov r5, sp ; Thumb-linux-NEXT: mov r5, sp
; Thumb-linux-NEXT: ldr r4, .LCPI3_0 ; Thumb-linux-NEXT: ldr r4, .LCPI3_0
; Thumb-linux-NEXT: ldr r4, [r4] ; Thumb-linux-NEXT: ldr r4, [r4]
; Thumb-linux-NEXT: cmp r4, r5 ; Thumb-linux-NEXT: cmp r4, r5
; Thumb-linux-NEXT: blo .LBB3_2 ; Thumb-linux-NEXT: bls .LBB3_2
; Thumb-linux: mov r4, #48 ; Thumb-linux: mov r4, #48
; Thumb-linux-NEXT: mov r5, #0 ; Thumb-linux-NEXT: mov r5, #0
; Thumb-linux-NEXT: push {lr} ; Thumb-linux-NEXT: push {lr}
; Thumb-linux-NEXT: bl __morestack ; Thumb-linux-NEXT: bl __morestack
; Thumb-linux-NEXT: pop {r4} ; Thumb-linux-NEXT: pop {r4}
; Thumb-linux-NEXT: mov lr, r4 ; Thumb-linux-NEXT: mov lr, r4
; Thumb-linux-NEXT: pop {r4, r5} ; Thumb-linux-NEXT: pop {r4, r5}
Show All 12 Lines
; Thumb-android: push {r4, r5} ; Thumb-android: push {r4, r5}
; Thumb-android-NEXT: mov r5, sp ; Thumb-android-NEXT: mov r5, sp
; Thumb-android-NEXT: ldr r4, .LCPI4_2 ; Thumb-android-NEXT: ldr r4, .LCPI4_2
; Thumb-android-NEXT: sub r5, r5, r4 ; Thumb-android-NEXT: sub r5, r5, r4
; Thumb-android-NEXT: ldr r4, .LCPI4_3 ; Thumb-android-NEXT: ldr r4, .LCPI4_3
; Thumb-android-NEXT: ldr r4, [r4] ; Thumb-android-NEXT: ldr r4, [r4]
; Thumb-android-NEXT: cmp r4, r5 ; Thumb-android-NEXT: cmp r4, r5
; Thumb-android-NEXT: blo .LBB4_2 ; Thumb-android-NEXT: bls .LBB4_2
; Thumb-android: ldr r4, .LCPI4_2 ; Thumb-android: ldr r4, .LCPI4_2
; Thumb-android-NEXT: mov r5, #0 ; Thumb-android-NEXT: mov r5, #0
; Thumb-android-NEXT: push {lr} ; Thumb-android-NEXT: push {lr}
; Thumb-android-NEXT: bl __morestack ; Thumb-android-NEXT: bl __morestack
; Thumb-android-NEXT: pop {r4} ; Thumb-android-NEXT: pop {r4}
; Thumb-android-NEXT: mov lr, r4 ; Thumb-android-NEXT: mov lr, r4
; Thumb-android-NEXT: pop {r4, r5} ; Thumb-android-NEXT: pop {r4, r5}
; Thumb-android-NEXT: bx lr ; Thumb-android-NEXT: bx lr
; Thumb-android: pop {r4, r5} ; Thumb-android: pop {r4, r5}
; Thumb-android: .LCPI4_2: ; Thumb-android: .LCPI4_2:
; Thumb-android-NEXT: .long 40192 ; Thumb-android-NEXT: .long 40192
; Thumb-linux-LABEL: test_fastcc_large: ; Thumb-linux-LABEL: test_fastcc_large:
; Thumb-linux: push {r4, r5} ; Thumb-linux: push {r4, r5}
; Thumb-linux-NEXT: mov r5, sp ; Thumb-linux-NEXT: mov r5, sp
; Thumb-linux-NEXT: ldr r4, .LCPI4_2 ; Thumb-linux-NEXT: ldr r4, .LCPI4_2
; Thumb-linux-NEXT: sub r5, r5, r4 ; Thumb-linux-NEXT: sub r5, r5, r4
; Thumb-linux-NEXT: ldr r4, .LCPI4_3 ; Thumb-linux-NEXT: ldr r4, .LCPI4_3
; Thumb-linux-NEXT: ldr r4, [r4] ; Thumb-linux-NEXT: ldr r4, [r4]
; Thumb-linux-NEXT: cmp r4, r5 ; Thumb-linux-NEXT: cmp r4, r5
; Thumb-linux-NEXT: blo .LBB4_2 ; Thumb-linux-NEXT: bls .LBB4_2
; Thumb-linux: ldr r4, .LCPI4_2 ; Thumb-linux: ldr r4, .LCPI4_2
; Thumb-linux-NEXT: mov r5, #0 ; Thumb-linux-NEXT: mov r5, #0
; Thumb-linux-NEXT: push {lr} ; Thumb-linux-NEXT: push {lr}
; Thumb-linux-NEXT: bl __morestack ; Thumb-linux-NEXT: bl __morestack
; Thumb-linux-NEXT: pop {r4} ; Thumb-linux-NEXT: pop {r4}
; Thumb-linux-NEXT: mov lr, r4 ; Thumb-linux-NEXT: mov lr, r4
; Thumb-linux-NEXT: pop {r4, r5} ; Thumb-linux-NEXT: pop {r4, r5}
Show All 40 Lines

llvm/test/CodeGen/Thumb2/segmented-stacks.ll

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=thumb-linux-androideabi -mcpu=arm1156t2-s -mattr=+thumb2 -verify-machineinstrs | FileCheck %s -check-prefix=THUMB ; RUN: llc < %s -mtriple=thumb-linux-androideabi -mcpu=arm1156t2-s -mattr=+thumb2 -verify-machineinstrs | FileCheck %s -check-prefix=THUMB
; RUN: llc < %s -mtriple=arm-linux-androideabi -mcpu=arm1156t2-s -verify-machineinstrs | FileCheck %s -check-prefix=ARM ; RUN: llc < %s -mtriple=arm-linux-androideabi -mcpu=arm1156t2-s -verify-machineinstrs | FileCheck %s -check-prefix=ARM
; Just to prevent the alloca from being optimized away ; Just to prevent the alloca from being optimized away
declare void @dummy_use(ptr, i32) declare void @dummy_use(ptr, i32)
define void @test_basic() #0 { define void @test_basic() #0 {
; THUMB-LABEL: test_basic: ; THUMB-LABEL: test_basic:
; THUMB: @ %bb.0: ; THUMB: @ %bb.0:
; THUMB-NEXT: push {r4, r5} ; THUMB-NEXT: push {r4, r5}
; THUMB-NEXT: mrc p15, #0, r4, c13, c0, #3 ; THUMB-NEXT: mrc p15, #0, r4, c13, c0, #3
; THUMB-NEXT: mov r5, sp ; THUMB-NEXT: mov r5, sp
; THUMB-NEXT: ldr.w r4, [r4, #252] ; THUMB-NEXT: ldr.w r4, [r4, #252]
; THUMB-NEXT: cmp r4, r5 ; THUMB-NEXT: cmp r4, r5
; THUMB-NEXT: blo .LBB0_2 ; THUMB-NEXT: bls .LBB0_2
; THUMB-NEXT: @ %bb.1: ; THUMB-NEXT: @ %bb.1:
; THUMB-NEXT: mov r4, #48 ; THUMB-NEXT: mov r4, #48
; THUMB-NEXT: mov r5, #0 ; THUMB-NEXT: mov r5, #0
; THUMB-NEXT: push {lr} ; THUMB-NEXT: push {lr}
; THUMB-NEXT: bl __morestack ; THUMB-NEXT: bl __morestack
; THUMB-NEXT: ldr lr, [sp], #4 ; THUMB-NEXT: ldr lr, [sp], #4
; THUMB-NEXT: pop {r4, r5} ; THUMB-NEXT: pop {r4, r5}
; THUMB-NEXT: bx lr ; THUMB-NEXT: bx lr
Show All 11 Lines
; ;
; ARM-LABEL: test_basic: ; ARM-LABEL: test_basic:
; ARM: @ %bb.0: ; ARM: @ %bb.0:
; ARM-NEXT: push {r4, r5} ; ARM-NEXT: push {r4, r5}
; ARM-NEXT: mrc p15, #0, r4, c13, c0, #3 ; ARM-NEXT: mrc p15, #0, r4, c13, c0, #3
; ARM-NEXT: mov r5, sp ; ARM-NEXT: mov r5, sp
; ARM-NEXT: ldr r4, [r4, #252] ; ARM-NEXT: ldr r4, [r4, #252]
; ARM-NEXT: cmp r4, r5 ; ARM-NEXT: cmp r4, r5
; ARM-NEXT: blo .LBB0_2 ; ARM-NEXT: bls .LBB0_2
; ARM-NEXT: @ %bb.1: ; ARM-NEXT: @ %bb.1:
; ARM-NEXT: mov r4, #48 ; ARM-NEXT: mov r4, #48
; ARM-NEXT: mov r5, #0 ; ARM-NEXT: mov r5, #0
; ARM-NEXT: stmdb sp!, {lr} ; ARM-NEXT: stmdb sp!, {lr}
; ARM-NEXT: bl __morestack ; ARM-NEXT: bl __morestack
; ARM-NEXT: ldm sp!, {lr} ; ARM-NEXT: ldm sp!, {lr}
; ARM-NEXT: pop {r4, r5} ; ARM-NEXT: pop {r4, r5}
; ARM-NEXT: bx lr ; ARM-NEXT: bx lr
Show All 23 Lines
; THUMB: push {r4, r5} ; THUMB: push {r4, r5}
; THUMB-NEXT: movw r4, #40192 ; THUMB-NEXT: movw r4, #40192
; THUMB-NEXT: mov r5, sp ; THUMB-NEXT: mov r5, sp
; THUMB-NEXT: movt r4, #0 ; THUMB-NEXT: movt r4, #0
; THUMB-NEXT: sub r5, r5, r4 ; THUMB-NEXT: sub r5, r5, r4
; THUMB-NEXT: mrc p15, #0, r4, c13, c0, #3 ; THUMB-NEXT: mrc p15, #0, r4, c13, c0, #3
; THUMB-NEXT: ldr.w r4, [r4, #252] ; THUMB-NEXT: ldr.w r4, [r4, #252]
; THUMB-NEXT: cmp r4, r5 ; THUMB-NEXT: cmp r4, r5
; THUMB-NEXT: blo .LBB1_2 ; THUMB-NEXT: bls .LBB1_2
; THUMB: movw r4, #40192 ; THUMB: movw r4, #40192
; THUMB-NEXT: movt r4, #0 ; THUMB-NEXT: movt r4, #0
; THUMB-NEXT: mov r5, #0 ; THUMB-NEXT: mov r5, #0
; THUMB-NEXT: push {lr} ; THUMB-NEXT: push {lr}
; THUMB-NEXT: bl __morestack ; THUMB-NEXT: bl __morestack
; THUMB-NEXT: ldr lr, [sp], #4 ; THUMB-NEXT: ldr lr, [sp], #4
; THUMB-NEXT: pop {r4, r5} ; THUMB-NEXT: pop {r4, r5}
; THUMB-NEXT: bx lr ; THUMB-NEXT: bx lr
; THUMB: pop {r4, r5} ; THUMB: pop {r4, r5}
; ARM-LABEL: test_large: ; ARM-LABEL: test_large:
; ARM: push {r4, r5} ; ARM: push {r4, r5}
; ARM-NEXT: ldr r4, .LCPI1_0 ; ARM-NEXT: ldr r4, .LCPI1_0
; ARM-NEXT: sub r5, sp, r4 ; ARM-NEXT: sub r5, sp, r4
; ARM-NEXT: mrc p15, #0, r4, c13, c0, #3 ; ARM-NEXT: mrc p15, #0, r4, c13, c0, #3
; ARM-NEXT: ldr r4, [r4, #252] ; ARM-NEXT: ldr r4, [r4, #252]
; ARM-NEXT: cmp r4, r5 ; ARM-NEXT: cmp r4, r5
; ARM-NEXT: blo .LBB1_2 ; ARM-NEXT: bls .LBB1_2
; ARM: ldr r4, .LCPI1_0 ; ARM: ldr r4, .LCPI1_0
; ARM-NEXT: mov r5, #0 ; ARM-NEXT: mov r5, #0
; ARM-NEXT: stmdb sp!, {lr} ; ARM-NEXT: stmdb sp!, {lr}
; ARM-NEXT: bl __morestack ; ARM-NEXT: bl __morestack
; ARM-NEXT: ldm sp!, {lr} ; ARM-NEXT: ldm sp!, {lr}
; ARM-NEXT: pop {r4, r5} ; ARM-NEXT: pop {r4, r5}
; ARM-NEXT: bx lr ; ARM-NEXT: bx lr
Show All 15 Lines
; THUMB: push {r4, r5} ; THUMB: push {r4, r5}
; THUMB-NEXT: movw r4, #40192 ; THUMB-NEXT: movw r4, #40192
; THUMB-NEXT: mov r5, sp ; THUMB-NEXT: mov r5, sp
; THUMB-NEXT: movt r4, #0 ; THUMB-NEXT: movt r4, #0
; THUMB-NEXT: sub r5, r5, r4 ; THUMB-NEXT: sub r5, r5, r4
; THUMB-NEXT: mrc p15, #0, r4, c13, c0, #3 ; THUMB-NEXT: mrc p15, #0, r4, c13, c0, #3
; THUMB-NEXT: ldr.w r4, [r4, #252] ; THUMB-NEXT: ldr.w r4, [r4, #252]
; THUMB-NEXT: cmp r4, r5 ; THUMB-NEXT: cmp r4, r5
; THUMB-NEXT: blo .LBB2_2 ; THUMB-NEXT: bls .LBB2_2
; THUMB: movw r4, #40192 ; THUMB: movw r4, #40192
; THUMB-NEXT: movt r4, #0 ; THUMB-NEXT: movt r4, #0
; THUMB-NEXT: mov r5, #0 ; THUMB-NEXT: mov r5, #0
; THUMB-NEXT: push {lr} ; THUMB-NEXT: push {lr}
; THUMB-NEXT: bl __morestack ; THUMB-NEXT: bl __morestack
; THUMB-NEXT: ldr lr, [sp], #4 ; THUMB-NEXT: ldr lr, [sp], #4
; THUMB-NEXT: pop {r4, r5} ; THUMB-NEXT: pop {r4, r5}
; THUMB-NEXT: bx lr ; THUMB-NEXT: bx lr
; THUMB: pop {r4, r5} ; THUMB: pop {r4, r5}
; ARM-LABEL: test_fastcc_large: ; ARM-LABEL: test_fastcc_large:
; ARM: push {r4, r5} ; ARM: push {r4, r5}
; ARM-NEXT: ldr r4, .LCPI2_0 ; ARM-NEXT: ldr r4, .LCPI2_0
; ARM-NEXT: sub r5, sp, r4 ; ARM-NEXT: sub r5, sp, r4
; ARM-NEXT: mrc p15, #0, r4, c13, c0, #3 ; ARM-NEXT: mrc p15, #0, r4, c13, c0, #3
; ARM-NEXT: ldr r4, [r4, #252] ; ARM-NEXT: ldr r4, [r4, #252]
; ARM-NEXT: cmp r4, r5 ; ARM-NEXT: cmp r4, r5
; ARM-NEXT: blo .LBB2_2 ; ARM-NEXT: bls .LBB2_2
; ARM: ldr r4, .LCPI2_0 ; ARM: ldr r4, .LCPI2_0
; ARM-NEXT: mov r5, #0 ; ARM-NEXT: mov r5, #0
; ARM-NEXT: stmdb sp!, {lr} ; ARM-NEXT: stmdb sp!, {lr}
; ARM-NEXT: bl __morestack ; ARM-NEXT: bl __morestack
; ARM-NEXT: ldm sp!, {lr} ; ARM-NEXT: ldm sp!, {lr}
; ARM-NEXT: pop {r4, r5} ; ARM-NEXT: pop {r4, r5}
; ARM-NEXT: bx lr ; ARM-NEXT: bx lr
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