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clang-p2996/llvm/test/CodeGen/AMDGPU/strict_fma.f64.ll
Jay Foad f2c164c815 [AMDGPU] Do not wait for vscnt on function entry and return 
SIInsertWaitcnts inserts waitcnt instructions to resolve data
dependencies. The GFX10+ vscnt (VMEM store count) counter is never used
in this way. It is only used to resolve memory dependencies, and that is
handled by SIMemoryLegalizer. Hence there is no need to conservatively
wait for vscnt to be 0 on function entry and before returns.

Differential Revision: https://reviews.llvm.org/D153537
2023-07-04 12:22:38 +01:00

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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -mtriple=amdgcn-mesa-mesa3d -mcpu=gfx900 < %s | FileCheck -check-prefix=GCN %s
; RUN: llc -mtriple=amdgcn-mesa-mesa3d -mcpu=gfx1010 < %s | FileCheck -check-prefix=GFX10 %s
; RUN: llc -mtriple=amdgcn-mesa-mesa3d -mcpu=gfx1100 -amdgpu-enable-delay-alu=0 < %s | FileCheck -check-prefix=GFX10 %s
define double @v_constained_fma_f64_fpexcept_strict(double %x, double %y, double %z) #0 {
; GCN-LABEL: v_constained_fma_f64_fpexcept_strict:
; GCN: ; %bb.0:
; GCN-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GCN-NEXT: v_fma_f64 v[0:1], v[0:1], v[2:3], v[4:5]
; GCN-NEXT: s_setpc_b64 s[30:31]
;
; GFX10-LABEL: v_constained_fma_f64_fpexcept_strict:
; GFX10: ; %bb.0:
; GFX10-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GFX10-NEXT: v_fma_f64 v[0:1], v[0:1], v[2:3], v[4:5]
; GFX10-NEXT: s_setpc_b64 s[30:31]
%val = call double @llvm.experimental.constrained.fma.f64(double %x, double %y, double %z, metadata !"round.tonearest", metadata !"fpexcept.strict")
ret double %val
}
define <2 x double> @v_constained_fma_v2f64_fpexcept_strict(<2 x double> %x, <2 x double> %y, <2 x double> %z) #0 {
; GCN-LABEL: v_constained_fma_v2f64_fpexcept_strict:
; GCN: ; %bb.0:
; GCN-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GCN-NEXT: v_fma_f64 v[0:1], v[0:1], v[4:5], v[8:9]
; GCN-NEXT: v_fma_f64 v[2:3], v[2:3], v[6:7], v[10:11]
; GCN-NEXT: s_setpc_b64 s[30:31]
;
; GFX10-LABEL: v_constained_fma_v2f64_fpexcept_strict:
; GFX10: ; %bb.0:
; GFX10-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GFX10-NEXT: v_fma_f64 v[0:1], v[0:1], v[4:5], v[8:9]
; GFX10-NEXT: v_fma_f64 v[2:3], v[2:3], v[6:7], v[10:11]
; GFX10-NEXT: s_setpc_b64 s[30:31]
%val = call <2 x double> @llvm.experimental.constrained.fma.v2f64(<2 x double> %x, <2 x double> %y, <2 x double> %z, metadata !"round.tonearest", metadata !"fpexcept.strict")
ret <2 x double> %val
}
define <3 x double> @v_constained_fma_v3f64_fpexcept_strict(<3 x double> %x, <3 x double> %y, <3 x double> %z) #0 {
; GCN-LABEL: v_constained_fma_v3f64_fpexcept_strict:
; GCN: ; %bb.0:
; GCN-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GCN-NEXT: v_fma_f64 v[0:1], v[0:1], v[6:7], v[12:13]
; GCN-NEXT: v_fma_f64 v[2:3], v[2:3], v[8:9], v[14:15]
; GCN-NEXT: v_fma_f64 v[4:5], v[4:5], v[10:11], v[16:17]
; GCN-NEXT: s_setpc_b64 s[30:31]
;
; GFX10-LABEL: v_constained_fma_v3f64_fpexcept_strict:
; GFX10: ; %bb.0:
; GFX10-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GFX10-NEXT: v_fma_f64 v[0:1], v[0:1], v[6:7], v[12:13]
; GFX10-NEXT: v_fma_f64 v[2:3], v[2:3], v[8:9], v[14:15]
; GFX10-NEXT: v_fma_f64 v[4:5], v[4:5], v[10:11], v[16:17]
; GFX10-NEXT: s_setpc_b64 s[30:31]
%val = call <3 x double> @llvm.experimental.constrained.fma.v3f64(<3 x double> %x, <3 x double> %y, <3 x double> %z, metadata !"round.tonearest", metadata !"fpexcept.strict")
ret <3 x double> %val
}
define <4 x double> @v_constained_fma_v4f64_fpexcept_strict(<4 x double> %x, <4 x double> %y, <4 x double> %z) #0 {
; GCN-LABEL: v_constained_fma_v4f64_fpexcept_strict:
; GCN: ; %bb.0:
; GCN-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GCN-NEXT: v_fma_f64 v[0:1], v[0:1], v[8:9], v[16:17]
; GCN-NEXT: v_fma_f64 v[2:3], v[2:3], v[10:11], v[18:19]
; GCN-NEXT: v_fma_f64 v[4:5], v[4:5], v[12:13], v[20:21]
; GCN-NEXT: v_fma_f64 v[6:7], v[6:7], v[14:15], v[22:23]
; GCN-NEXT: s_setpc_b64 s[30:31]
;
; GFX10-LABEL: v_constained_fma_v4f64_fpexcept_strict:
; GFX10: ; %bb.0:
; GFX10-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GFX10-NEXT: v_fma_f64 v[0:1], v[0:1], v[8:9], v[16:17]
; GFX10-NEXT: v_fma_f64 v[2:3], v[2:3], v[10:11], v[18:19]
; GFX10-NEXT: v_fma_f64 v[4:5], v[4:5], v[12:13], v[20:21]
; GFX10-NEXT: v_fma_f64 v[6:7], v[6:7], v[14:15], v[22:23]
; GFX10-NEXT: s_setpc_b64 s[30:31]
%val = call <4 x double> @llvm.experimental.constrained.fma.v4f64(<4 x double> %x, <4 x double> %y, <4 x double> %z, metadata !"round.tonearest", metadata !"fpexcept.strict")
ret <4 x double> %val
}
define double @v_constained_fma_f64_fpexcept_strict_fneg(double %x, double %y, double %z) #0 {
; GCN-LABEL: v_constained_fma_f64_fpexcept_strict_fneg:
; GCN: ; %bb.0:
; GCN-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GCN-NEXT: v_fma_f64 v[0:1], v[0:1], v[2:3], -v[4:5]
; GCN-NEXT: s_setpc_b64 s[30:31]
;
; GFX10-LABEL: v_constained_fma_f64_fpexcept_strict_fneg:
; GFX10: ; %bb.0:
; GFX10-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GFX10-NEXT: v_fma_f64 v[0:1], v[0:1], v[2:3], -v[4:5]
; GFX10-NEXT: s_setpc_b64 s[30:31]
%neg.z = fneg double %z
%val = call double @llvm.experimental.constrained.fma.f64(double %x, double %y, double %neg.z, metadata !"round.tonearest", metadata !"fpexcept.strict")
ret double %val
}
define double @v_constained_fma_f64_fpexcept_strict_fneg_fneg(double %x, double %y, double %z) #0 {
; GCN-LABEL: v_constained_fma_f64_fpexcept_strict_fneg_fneg:
; GCN: ; %bb.0:
; GCN-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GCN-NEXT: v_fma_f64 v[0:1], -v[0:1], -v[2:3], v[4:5]
; GCN-NEXT: s_setpc_b64 s[30:31]
;
; GFX10-LABEL: v_constained_fma_f64_fpexcept_strict_fneg_fneg:
; GFX10: ; %bb.0:
; GFX10-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GFX10-NEXT: v_fma_f64 v[0:1], -v[0:1], -v[2:3], v[4:5]
; GFX10-NEXT: s_setpc_b64 s[30:31]
%neg.x = fneg double %x
%neg.y = fneg double %y
%val = call double @llvm.experimental.constrained.fma.f64(double %neg.x, double %neg.y, double %z, metadata !"round.tonearest", metadata !"fpexcept.strict")
ret double %val
}
define double @v_constained_fma_f64_fpexcept_strict_fabs_fabs(double %x, double %y, double %z) #0 {
; GCN-LABEL: v_constained_fma_f64_fpexcept_strict_fabs_fabs:
; GCN: ; %bb.0:
; GCN-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GCN-NEXT: v_fma_f64 v[0:1], |v[0:1]|, |v[2:3]|, v[4:5]
; GCN-NEXT: s_setpc_b64 s[30:31]
;
; GFX10-LABEL: v_constained_fma_f64_fpexcept_strict_fabs_fabs:
; GFX10: ; %bb.0:
; GFX10-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GFX10-NEXT: v_fma_f64 v[0:1], |v[0:1]|, |v[2:3]|, v[4:5]
; GFX10-NEXT: s_setpc_b64 s[30:31]
%neg.x = call double @llvm.fabs.f64(double %x)
%neg.y = call double @llvm.fabs.f64(double %y)
%val = call double @llvm.experimental.constrained.fma.f64(double %neg.x, double %neg.y, double %z, metadata !"round.tonearest", metadata !"fpexcept.strict")
ret double %val
}
define <2 x double> @v_constained_fma_v2f64_fpexcept_strict_fneg_fneg(<2 x double> %x, <2 x double> %y, <2 x double> %z) #0 {
; GCN-LABEL: v_constained_fma_v2f64_fpexcept_strict_fneg_fneg:
; GCN: ; %bb.0:
; GCN-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GCN-NEXT: v_fma_f64 v[0:1], -v[0:1], -v[4:5], v[8:9]
; GCN-NEXT: v_fma_f64 v[2:3], -v[2:3], -v[6:7], v[10:11]
; GCN-NEXT: s_setpc_b64 s[30:31]
;
; GFX10-LABEL: v_constained_fma_v2f64_fpexcept_strict_fneg_fneg:
; GFX10: ; %bb.0:
; GFX10-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GFX10-NEXT: v_fma_f64 v[0:1], -v[0:1], -v[4:5], v[8:9]
; GFX10-NEXT: v_fma_f64 v[2:3], -v[2:3], -v[6:7], v[10:11]
; GFX10-NEXT: s_setpc_b64 s[30:31]
%neg.x = fneg <2 x double> %x
%neg.y = fneg <2 x double> %y
%val = call <2 x double> @llvm.experimental.constrained.fma.v2f64(<2 x double> %neg.x, <2 x double> %neg.y, <2 x double> %z, metadata !"round.tonearest", metadata !"fpexcept.strict")
ret <2 x double> %val
}
declare double @llvm.fabs.f64(double) #1
declare double @llvm.experimental.constrained.fma.f64(double, double, double, metadata, metadata) #1
declare <2 x double> @llvm.experimental.constrained.fma.v2f64(<2 x double>, <2 x double>, <2 x double>, metadata, metadata) #1
declare <3 x double> @llvm.experimental.constrained.fma.v3f64(<3 x double>, <3 x double>, <3 x double>, metadata, metadata) #1
declare <4 x double> @llvm.experimental.constrained.fma.v4f64(<4 x double>, <4 x double>, <4 x double>, metadata, metadata) #1
attributes #0 = { strictfp }
attributes #1 = { inaccessiblememonly nounwind willreturn }
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