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dd292a30dc
Detailed description:
After https://reviews.llvm.org/D59990 submit several issues were discovered.
Changes in common code were preserved but AMDGPU specific part was reverted to keep the backend working correctly.
Discovered issues were addressed in the following commits:
https://reviews.llvm.org/D67662
https://reviews.llvm.org/D67101
https://reviews.llvm.org/D63953
https://reviews.llvm.org/D63731
This change brings back AMDGPU specific changes.
Reviewed by: rampitec, arsenm
Differential Revision: https://reviews.llvm.org/D68635
llvm-svn: 374767
43 lines
1.7 KiB
LLVM
43 lines
1.7 KiB
LLVM
; RUN: llc < %s -mtriple=amdgcn--amdpal -mcpu=gfx900 -verify-machineinstrs | FileCheck %s
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; Check that the redundant immediate MOV instruction
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; (by-product of handling phi nodes) is not found
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; in the generated code.
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; CHECK-LABEL: {{^}}mov_opt:
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; CHECK: s_mov_b32 [[SREG:s[0-9]+]], 1.0
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; CHECK: %bb.1:
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; CHECK-NOT: v_mov_b32_e32 {{v[0-9]+}}, 1.0
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; CHECK: BB0_4:
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; CHECK: v_mov_b32_e32 v{{[0-9]+}}, [[SREG]]
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define amdgpu_ps void @mov_opt(i32 %arg, i32 inreg %arg1, i32 inreg %arg2) local_unnamed_addr #0 {
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bb:
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%tmp = icmp eq i32 %arg1, 0
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br i1 %tmp, label %bb3, label %bb10
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bb3: ; preds = %bb
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%tmp4 = icmp eq i32 %arg2, 0
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br i1 %tmp4, label %bb5, label %bb10
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bb5: ; preds = %bb3
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%tmp6 = getelementptr <{ [4294967295 x i32] }>, <{ [4294967295 x i32] }> addrspace(6)* null, i32 0, i32 0, i32 %arg
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%tmp7 = load i32, i32 addrspace(6)* %tmp6
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%tmp8 = icmp eq i32 %tmp7, 1
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br i1 %tmp8, label %bb10, label %bb9
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bb9: ; preds = %bb5
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br label %bb10
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bb10: ; preds = %bb9, %bb5, %bb3, %bb
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%tmp11 = phi float [ 1.000000e+00, %bb3 ], [ 0.000000e+00, %bb9 ], [ 1.000000e+00, %bb ], [ undef, %bb5 ]
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call void @llvm.amdgcn.exp.f32(i32 immarg 40, i32 immarg 15, float %tmp11, float undef, float undef, float undef, i1 immarg false, i1 immarg false) #0
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ret void
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}
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; Function Attrs: inaccessiblememonly nounwind
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declare void @llvm.amdgcn.exp.f32(i32 immarg, i32 immarg, float, float, float, float, i1 immarg, i1 immarg) #1
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attributes #0 = { nounwind }
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attributes #1 = { inaccessiblememonly nounwind }
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