diff --git a/llvm/lib/Target/AArch64/AArch64.td b/llvm/lib/Target/AArch64/AArch64.td --- a/llvm/lib/Target/AArch64/AArch64.td +++ b/llvm/lib/Target/AArch64/AArch64.td @@ -615,6 +615,7 @@ FeatureRCPC, FeaturePerfMon, FeaturePostRAScheduler, + FeatureFuseAddress, ]>; def ProcA57 : SubtargetFeature<"a57", "ARMProcFamily", "CortexA57", diff --git a/llvm/test/CodeGen/AArch64/a55-fuse-address.mir b/llvm/test/CodeGen/AArch64/a55-fuse-address.mir new file mode 100644 --- /dev/null +++ b/llvm/test/CodeGen/AArch64/a55-fuse-address.mir @@ -0,0 +1,45 @@ +# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py +# RUN: llc -o - %s -mtriple=aarch64 -run-pass=machine-scheduler -verify-machineinstrs | FileCheck %s +--- | + target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128" + target triple = "aarch64-arm-none-eabi" + + @a = dso_local global i32 2, align 4 + @b = dso_local global i32 4, align 4 + + define i32 @fuseaddress(i32 %num) #0 { + entry: + %0 = load i32, i32* @a, align 4 + %1 = load i32, i32* @b, align 4 + %mul = mul nsw i32 %0, %1 + ret i32 %mul + } + + attributes #0 = { "target-cpu"="cortex-a55" } + +--- +name: fuseaddress +legalized: true +regBankSelected: true +tracksRegLiveness: true +liveins: + - { reg: '$w0' } +body: | + bb.0.entry: + liveins: $w0 + ; CHECK-LABEL: name: fuseaddress + ; CHECK: liveins: $w0 + ; CHECK: [[ADRP:%[0-9]+]]:gpr64common = ADRP target-flags(aarch64-page) @a + ; CHECK: [[LDRWui:%[0-9]+]]:gpr32 = LDRWui [[ADRP]], target-flags(aarch64-pageoff, aarch64-nc) @a :: (dereferenceable load (s32) from @a) + ; CHECK: [[ADRP1:%[0-9]+]]:gpr64common = ADRP target-flags(aarch64-page) @b + ; CHECK: [[LDRWui1:%[0-9]+]]:gpr32 = LDRWui [[ADRP1]], target-flags(aarch64-pageoff, aarch64-nc) @b :: (dereferenceable load (s32) from @b) + ; CHECK: [[MADDWrrr:%[0-9]+]]:gpr32 = nsw MADDWrrr [[LDRWui]], [[LDRWui1]], $wzr + ; CHECK: $w0 = COPY [[MADDWrrr]] + ; CHECK: RET_ReallyLR implicit $w0 + %1:gpr64common = ADRP target-flags(aarch64-page) @a + %4:gpr64common = ADRP target-flags(aarch64-page) @b + %2:gpr32 = LDRWui killed %1:gpr64common, target-flags(aarch64-pageoff, aarch64-nc) @a :: (dereferenceable load (s32) from @a) + %5:gpr32 = LDRWui killed %4:gpr64common, target-flags(aarch64-pageoff, aarch64-nc) @b :: (dereferenceable load (s32) from @b) + %6:gpr32 = nsw MADDWrrr killed %2:gpr32, killed %5:gpr32, $wzr + $w0 = COPY %6:gpr32 + RET_ReallyLR implicit $w0