Index: lld/test/ELF/arm-thunk-many-passes.s =================================================================== --- /dev/null +++ lld/test/ELF/arm-thunk-many-passes.s @@ -0,0 +1,94 @@ +// REQUIRES: arm +// RUN: llvm-mc -arm-add-build-attributes -filetype=obj -triple=armv7a-linux-gnueabihf %s -o %t +// RUN: echo "SECTIONS { \ +// RUN: . = SIZEOF_HEADERS; \ +// RUN: .text 0x00011000 : { *(.text.*) } \ +// RUN: } \ +// RUN: sym = .;" > %t.script +// RUN: ld.lld --script %t.script %t -o %t2 +// RUN: llvm-readobj --symbols %t2 | FileCheck --check-prefix CHECK-SYM %s +// RUN: llvm-objdump --no-show-raw-insn --start-address=0x11000 --stop-address=0x1103c -d %t2 | FileCheck %s + +// A worst case case of thunk generation that takes 9 passes to converge +// one fewer than the limit of 10. +// We check that the thunks have been generated and a symbol defined after +// the thunks has the correct value. + +// CHECK-SYM: Name: sym +// CHECK-SYM-NEXT: Value: 0x101104C + +// CHECK: 00011000 _start: +// CHECK-NEXT: 11000: b.w #14680132 <__Thumbv7ABSLongThunk_f3> +// CHECK-NEXT: 11004: b.w #14680128 <__Thumbv7ABSLongThunk_f3> +// CHECK-NEXT: 11008: b.w #14680128 <__Thumbv7ABSLongThunk_f4> +// CHECK-NEXT: 1100c: b.w #14680124 <__Thumbv7ABSLongThunk_f4> +// CHECK-NEXT: 11010: b.w #14680124 <__Thumbv7ABSLongThunk_f5> +// CHECK-NEXT: 11014: b.w #14680120 <__Thumbv7ABSLongThunk_f5> +// CHECK-NEXT: 11018: b.w #14680120 <__Thumbv7ABSLongThunk_f6> +// CHECK-NEXT: 1101c: b.w #14680116 <__Thumbv7ABSLongThunk_f6> +// CHECK-NEXT: 11020: b.w #14680116 <__Thumbv7ABSLongThunk_f7> +// CHECK-NEXT: 11024: b.w #14680112 <__Thumbv7ABSLongThunk_f7> +// CHECK-NEXT: 11028: b.w #14680112 <__Thumbv7ABSLongThunk_f8> +// CHECK-NEXT: 1102c: b.w #14680108 <__Thumbv7ABSLongThunk_f8> +// CHECK-NEXT: 11030: b.w #14680108 <__Thumbv7ABSLongThunk_f9> +// CHECK-NEXT: 11034: b.w #14680104 <__Thumbv7ABSLongThunk_f9> +// CHECK-NEXT: 11038: b.w #14680104 <__Thumbv7ABSLongThunk_f10> + + + .thumb + .section .text.00, "ax", %progbits + .globl _start + .thumb_func +_start: b.w f2 + b.w f2 + b.w f3 + b.w f3 + b.w f4 + b.w f4 + b.w f5 + b.w f5 + b.w f6 + b.w f6 + b.w f7 + b.w f7 + b.w f8 + b.w f8 + b.w f9 + b.w f9 + b.w f10 + b.w f10 + + .section .text.01, "ax", %progbits + .space 14 * 1024 * 1024 + .section .text.02, "ax", %progbits + .space 1024 * 1024 + .section .text.02, "ax", %progbits + .space (1024 * 1024) - 68 + .thumb_func +f2: bx lr + nop + .thumb_func +f3: bx lr + nop + .thumb_func +f4: bx lr + nop + .thumb_func +f5: bx lr + nop + .thumb_func +f6: bx lr + nop + .thumb_func +f7: bx lr + nop + .thumb_func +f8: bx lr + nop + .thumb_func +f9: bx lr + nop + .thumb_func +f10: bx lr + nop + .thumb_func