af2cbe8eff
We don't register i128 as a legal type with addRegisterClass, but it appears in the list of legal register types. This inconsistency resulted in the asm constraint lowering trying to use 2 128-bit registers for these operands. This would leave behind a dead def that would waste registers. Regresses GlobalISel tests for i128 load/store, but these aren't very important right now. Ideally these would not depend on the list of register types.
42 lines
1.8 KiB
LLVM
42 lines
1.8 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
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; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx908 -stop-after=finalize-isel -o - %s | FileCheck %s
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; Make sure we only use one 128-bit register instead of 2 for i128 asm
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; constraints
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define amdgpu_kernel void @s_input_output_i128() {
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; CHECK-LABEL: name: s_input_output_i128
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; CHECK: bb.0 (%ir-block.0):
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; CHECK: INLINEASM &"; def $0", 1 /* sideeffect attdialect */, 3997706 /* regdef:SGPR_128 */, def %4
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; CHECK: [[COPY:%[0-9]+]]:sgpr_128 = COPY %4
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; CHECK: INLINEASM &"; use $0", 1 /* sideeffect attdialect */, 3997705 /* reguse:SGPR_128 */, [[COPY]]
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; CHECK: S_ENDPGM 0
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%val = tail call i128 asm sideeffect "; def $0", "=s"()
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call void asm sideeffect "; use $0", "s"(i128 %val)
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ret void
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}
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define amdgpu_kernel void @v_input_output_i128() {
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; CHECK-LABEL: name: v_input_output_i128
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; CHECK: bb.0 (%ir-block.0):
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; CHECK: INLINEASM &"; def $0", 1 /* sideeffect attdialect */, 3866634 /* regdef:VReg_128 */, def %4
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; CHECK: [[COPY:%[0-9]+]]:vreg_128 = COPY %4
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; CHECK: INLINEASM &"; use $0", 1 /* sideeffect attdialect */, 3866633 /* reguse:VReg_128 */, [[COPY]]
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; CHECK: S_ENDPGM 0
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%val = tail call i128 asm sideeffect "; def $0", "=v"()
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call void asm sideeffect "; use $0", "v"(i128 %val)
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ret void
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}
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define amdgpu_kernel void @a_input_output_i128() {
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; CHECK-LABEL: name: a_input_output_i128
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; CHECK: bb.0 (%ir-block.0):
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; CHECK: INLINEASM &"; def $0", 1 /* sideeffect attdialect */, 3801098 /* regdef:AReg_128 */, def %4
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; CHECK: [[COPY:%[0-9]+]]:areg_128 = COPY %4
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; CHECK: INLINEASM &"; use $0", 1 /* sideeffect attdialect */, 3801097 /* reguse:AReg_128 */, [[COPY]]
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; CHECK: S_ENDPGM 0
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%val = call i128 asm sideeffect "; def $0", "=a"()
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call void asm sideeffect "; use $0", "a"(i128 %val)
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ret void
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}
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