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2ce7528398
The AMDGPU handling of f16 vectors is terrible still since it gets scalarized even when the vector operation is legal. The code is is essentially duplicated between the non-strict and strict case. Apparently no other expansions are currently trying to do this. This is mostly because I found the behavior of getStrictFPOperationAction to be confusing. In the ARM case, it would expand strict_fsub even though it shouldn't due to the later check. At that point, the logic required to check for legality was more complex than just duplicating the 2 instruction expansion.
130 lines
6.0 KiB
LLVM
130 lines
6.0 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc -mtriple=amdgcn-mesa-mesa3d -mcpu=gfx900 < %s | FileCheck -check-prefix=GCN %s
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define float @v_constained_fsub_f32_fpexcept_strict(float %x, float %y) #0 {
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; GCN-LABEL: v_constained_fsub_f32_fpexcept_strict:
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; GCN: ; %bb.0:
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; GCN-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
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; GCN-NEXT: v_sub_f32_e32 v0, v0, v1
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; GCN-NEXT: s_setpc_b64 s[30:31]
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%val = call float @llvm.experimental.constrained.fsub.f32(float %x, float %y, metadata !"round.tonearest", metadata !"fpexcept.strict")
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ret float %val
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}
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define float @v_constained_fsub_f32_fpexcept_ignore(float %x, float %y) #0 {
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; GCN-LABEL: v_constained_fsub_f32_fpexcept_ignore:
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; GCN: ; %bb.0:
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; GCN-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
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; GCN-NEXT: v_sub_f32_e32 v0, v0, v1
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; GCN-NEXT: s_setpc_b64 s[30:31]
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%val = call float @llvm.experimental.constrained.fsub.f32(float %x, float %y, metadata !"round.tonearest", metadata !"fpexcept.ignore")
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ret float %val
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}
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define float @v_constained_fsub_f32_fpexcept_maytrap(float %x, float %y) #0 {
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; GCN-LABEL: v_constained_fsub_f32_fpexcept_maytrap:
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; GCN: ; %bb.0:
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; GCN-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
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; GCN-NEXT: v_sub_f32_e32 v0, v0, v1
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; GCN-NEXT: s_setpc_b64 s[30:31]
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%val = call float @llvm.experimental.constrained.fsub.f32(float %x, float %y, metadata !"round.tonearest", metadata !"fpexcept.maytrap")
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ret float %val
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}
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define <2 x float> @v_constained_fsub_v2f32_fpexcept_strict(<2 x float> %x, <2 x float> %y) #0 {
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; GCN-LABEL: v_constained_fsub_v2f32_fpexcept_strict:
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; GCN: ; %bb.0:
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; GCN-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
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; GCN-NEXT: v_sub_f32_e32 v0, v0, v2
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; GCN-NEXT: v_sub_f32_e32 v1, v1, v3
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; GCN-NEXT: s_setpc_b64 s[30:31]
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%val = call <2 x float> @llvm.experimental.constrained.fsub.v2f32(<2 x float> %x, <2 x float> %y, metadata !"round.tonearest", metadata !"fpexcept.strict")
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ret <2 x float> %val
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}
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define <2 x float> @v_constained_fsub_v2f32_fpexcept_ignore(<2 x float> %x, <2 x float> %y) #0 {
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; GCN-LABEL: v_constained_fsub_v2f32_fpexcept_ignore:
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; GCN: ; %bb.0:
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; GCN-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
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; GCN-NEXT: v_sub_f32_e32 v0, v0, v2
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; GCN-NEXT: v_sub_f32_e32 v1, v1, v3
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; GCN-NEXT: s_setpc_b64 s[30:31]
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%val = call <2 x float> @llvm.experimental.constrained.fsub.v2f32(<2 x float> %x, <2 x float> %y, metadata !"round.tonearest", metadata !"fpexcept.ignore")
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ret <2 x float> %val
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}
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define <2 x float> @v_constained_fsub_v2f32_fpexcept_maytrap(<2 x float> %x, <2 x float> %y) #0 {
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; GCN-LABEL: v_constained_fsub_v2f32_fpexcept_maytrap:
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; GCN: ; %bb.0:
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; GCN-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
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; GCN-NEXT: v_sub_f32_e32 v0, v0, v2
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; GCN-NEXT: v_sub_f32_e32 v1, v1, v3
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; GCN-NEXT: s_setpc_b64 s[30:31]
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%val = call <2 x float> @llvm.experimental.constrained.fsub.v2f32(<2 x float> %x, <2 x float> %y, metadata !"round.tonearest", metadata !"fpexcept.maytrap")
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ret <2 x float> %val
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}
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define <3 x float> @v_constained_fsub_v3f32_fpexcept_strict(<3 x float> %x, <3 x float> %y) #0 {
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; GCN-LABEL: v_constained_fsub_v3f32_fpexcept_strict:
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; GCN: ; %bb.0:
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; GCN-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
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; GCN-NEXT: v_sub_f32_e32 v0, v0, v3
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; GCN-NEXT: v_sub_f32_e32 v1, v1, v4
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; GCN-NEXT: v_sub_f32_e32 v2, v2, v5
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; GCN-NEXT: s_setpc_b64 s[30:31]
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%val = call <3 x float> @llvm.experimental.constrained.fsub.v3f32(<3 x float> %x, <3 x float> %y, metadata !"round.tonearest", metadata !"fpexcept.strict")
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ret <3 x float> %val
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}
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define amdgpu_ps float @s_constained_fsub_f32_fpexcept_strict(float inreg %x, float inreg %y) #0 {
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; GCN-LABEL: s_constained_fsub_f32_fpexcept_strict:
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; GCN: ; %bb.0:
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; GCN-NEXT: v_mov_b32_e32 v0, s3
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; GCN-NEXT: v_sub_f32_e32 v0, s2, v0
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; GCN-NEXT: ; return to shader part epilog
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%val = call float @llvm.experimental.constrained.fsub.f32(float %x, float %y, metadata !"round.tonearest", metadata !"fpexcept.strict")
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ret float %val
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}
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define float @v_constained_fsub_f32_fpexcept_strict_fabs_lhs(float %x, float %y) #0 {
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; GCN-LABEL: v_constained_fsub_f32_fpexcept_strict_fabs_lhs:
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; GCN: ; %bb.0:
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; GCN-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
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; GCN-NEXT: v_sub_f32_e64 v0, |v0|, v1
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; GCN-NEXT: s_setpc_b64 s[30:31]
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%fabs.x = call float @llvm.fabs.f32(float %x)
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%val = call float @llvm.experimental.constrained.fsub.f32(float %fabs.x, float %y, metadata !"round.tonearest", metadata !"fpexcept.strict")
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ret float %val
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}
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define float @v_constained_fsub_f32_fpexcept_strict_fabs_rhs(float %x, float %y) #0 {
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; GCN-LABEL: v_constained_fsub_f32_fpexcept_strict_fabs_rhs:
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; GCN: ; %bb.0:
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; GCN-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
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; GCN-NEXT: v_sub_f32_e64 v0, v0, |v1|
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; GCN-NEXT: s_setpc_b64 s[30:31]
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%fabs.y = call float @llvm.fabs.f32(float %y)
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%val = call float @llvm.experimental.constrained.fsub.f32(float %x, float %fabs.y, metadata !"round.tonearest", metadata !"fpexcept.strict")
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ret float %val
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}
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define float @v_constained_fsub_f32_fpexcept_strict_fneg_fabs_lhs(float %x, float %y) #0 {
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; GCN-LABEL: v_constained_fsub_f32_fpexcept_strict_fneg_fabs_lhs:
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; GCN: ; %bb.0:
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; GCN-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
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; GCN-NEXT: v_sub_f32_e64 v0, -|v0|, v1
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; GCN-NEXT: s_setpc_b64 s[30:31]
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%fabs.x = call float @llvm.fabs.f32(float %x)
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%neg.fabs.x = fneg float %fabs.x
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%val = call float @llvm.experimental.constrained.fsub.f32(float %neg.fabs.x, float %y, metadata !"round.tonearest", metadata !"fpexcept.strict")
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ret float %val
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}
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declare float @llvm.fabs.f32(float) #1
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declare float @llvm.experimental.constrained.fsub.f32(float, float, metadata, metadata) #1
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declare <2 x float> @llvm.experimental.constrained.fsub.v2f32(<2 x float>, <2 x float>, metadata, metadata) #1
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declare <3 x float> @llvm.experimental.constrained.fsub.v3f32(<3 x float>, <3 x float>, metadata, metadata) #1
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attributes #0 = { strictfp }
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attributes #1 = { inaccessiblememonly nounwind willreturn }
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