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clang-p2996/llvm/test/CodeGen/AMDGPU/strict_fadd.f16.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

258 lines
12 KiB
LLVM
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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-prefixes=GCN,GFX9 %s
; RUN: llc -mtriple=amdgcn-mesa-mesa3d -mcpu=fiji < %s | FileCheck -check-prefixes=GCN,GFX8 %s
; RUN: llc -mtriple=amdgcn-mesa-mesa3d -mcpu=gfx1010 < %s | FileCheck -check-prefixes=GFX10PLUS,GFX10 %s
; RUN: llc -mtriple=amdgcn-mesa-mesa3d -mcpu=gfx1100 -amdgpu-enable-delay-alu=0 < %s | FileCheck -check-prefixes=GFX10PLUS,GFX11 %s
; FIXME: promotion not handled without f16 insts
define half @v_constained_fadd_f16_fpexcept_strict(half %x, half %y) #0 {
; GCN-LABEL: v_constained_fadd_f16_fpexcept_strict:
; GCN: ; %bb.0:
; GCN-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GCN-NEXT: v_add_f16_e32 v0, v0, v1
; GCN-NEXT: s_setpc_b64 s[30:31]
;
; GFX10PLUS-LABEL: v_constained_fadd_f16_fpexcept_strict:
; GFX10PLUS: ; %bb.0:
; GFX10PLUS-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GFX10PLUS-NEXT: v_add_f16_e32 v0, v0, v1
; GFX10PLUS-NEXT: s_setpc_b64 s[30:31]
%val = call half @llvm.experimental.constrained.fadd.f16(half %x, half %y, metadata !"round.tonearest", metadata !"fpexcept.strict")
ret half %val
}
define half @v_constained_fadd_f16_fpexcept_ignore(half %x, half %y) #0 {
; GCN-LABEL: v_constained_fadd_f16_fpexcept_ignore:
; GCN: ; %bb.0:
; GCN-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GCN-NEXT: v_add_f16_e32 v0, v0, v1
; GCN-NEXT: s_setpc_b64 s[30:31]
;
; GFX10PLUS-LABEL: v_constained_fadd_f16_fpexcept_ignore:
; GFX10PLUS: ; %bb.0:
; GFX10PLUS-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GFX10PLUS-NEXT: v_add_f16_e32 v0, v0, v1
; GFX10PLUS-NEXT: s_setpc_b64 s[30:31]
%val = call half @llvm.experimental.constrained.fadd.f16(half %x, half %y, metadata !"round.tonearest", metadata !"fpexcept.ignore")
ret half %val
}
define half @v_constained_fadd_f16_fpexcept_maytrap(half %x, half %y) #0 {
; GCN-LABEL: v_constained_fadd_f16_fpexcept_maytrap:
; GCN: ; %bb.0:
; GCN-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GCN-NEXT: v_add_f16_e32 v0, v0, v1
; GCN-NEXT: s_setpc_b64 s[30:31]
;
; GFX10PLUS-LABEL: v_constained_fadd_f16_fpexcept_maytrap:
; GFX10PLUS: ; %bb.0:
; GFX10PLUS-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GFX10PLUS-NEXT: v_add_f16_e32 v0, v0, v1
; GFX10PLUS-NEXT: s_setpc_b64 s[30:31]
%val = call half @llvm.experimental.constrained.fadd.f16(half %x, half %y, metadata !"round.tonearest", metadata !"fpexcept.maytrap")
ret half %val
}
define <2 x half> @v_constained_fadd_v2f16_fpexcept_strict(<2 x half> %x, <2 x half> %y) #0 {
; GFX9-LABEL: v_constained_fadd_v2f16_fpexcept_strict:
; GFX9: ; %bb.0:
; GFX9-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GFX9-NEXT: v_pk_add_f16 v0, v0, v1
; GFX9-NEXT: s_setpc_b64 s[30:31]
;
; GFX8-LABEL: v_constained_fadd_v2f16_fpexcept_strict:
; GFX8: ; %bb.0:
; GFX8-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GFX8-NEXT: v_add_f16_sdwa v2, v0, v1 dst_sel:WORD_1 dst_unused:UNUSED_PAD src0_sel:WORD_1 src1_sel:WORD_1
; GFX8-NEXT: v_add_f16_e32 v0, v0, v1
; GFX8-NEXT: v_or_b32_e32 v0, v0, v2
; GFX8-NEXT: s_setpc_b64 s[30:31]
;
; GFX10PLUS-LABEL: v_constained_fadd_v2f16_fpexcept_strict:
; GFX10PLUS: ; %bb.0:
; GFX10PLUS-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GFX10PLUS-NEXT: v_pk_add_f16 v0, v0, v1
; GFX10PLUS-NEXT: s_setpc_b64 s[30:31]
%val = call <2 x half> @llvm.experimental.constrained.fadd.v2f16(<2 x half> %x, <2 x half> %y, metadata !"round.tonearest", metadata !"fpexcept.strict")
ret <2 x half> %val
}
define <2 x half> @v_constained_fadd_v2f16_fpexcept_ignore(<2 x half> %x, <2 x half> %y) #0 {
; GFX9-LABEL: v_constained_fadd_v2f16_fpexcept_ignore:
; GFX9: ; %bb.0:
; GFX9-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GFX9-NEXT: v_pk_add_f16 v0, v0, v1
; GFX9-NEXT: s_setpc_b64 s[30:31]
;
; GFX8-LABEL: v_constained_fadd_v2f16_fpexcept_ignore:
; GFX8: ; %bb.0:
; GFX8-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GFX8-NEXT: v_add_f16_sdwa v2, v0, v1 dst_sel:WORD_1 dst_unused:UNUSED_PAD src0_sel:WORD_1 src1_sel:WORD_1
; GFX8-NEXT: v_add_f16_e32 v0, v0, v1
; GFX8-NEXT: v_or_b32_e32 v0, v0, v2
; GFX8-NEXT: s_setpc_b64 s[30:31]
;
; GFX10PLUS-LABEL: v_constained_fadd_v2f16_fpexcept_ignore:
; GFX10PLUS: ; %bb.0:
; GFX10PLUS-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GFX10PLUS-NEXT: v_pk_add_f16 v0, v0, v1
; GFX10PLUS-NEXT: s_setpc_b64 s[30:31]
%val = call <2 x half> @llvm.experimental.constrained.fadd.v2f16(<2 x half> %x, <2 x half> %y, metadata !"round.tonearest", metadata !"fpexcept.ignore")
ret <2 x half> %val
}
define <2 x half> @v_constained_fadd_v2f16_fpexcept_maytrap(<2 x half> %x, <2 x half> %y) #0 {
; GFX9-LABEL: v_constained_fadd_v2f16_fpexcept_maytrap:
; GFX9: ; %bb.0:
; GFX9-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GFX9-NEXT: v_pk_add_f16 v0, v0, v1
; GFX9-NEXT: s_setpc_b64 s[30:31]
;
; GFX8-LABEL: v_constained_fadd_v2f16_fpexcept_maytrap:
; GFX8: ; %bb.0:
; GFX8-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GFX8-NEXT: v_add_f16_sdwa v2, v0, v1 dst_sel:WORD_1 dst_unused:UNUSED_PAD src0_sel:WORD_1 src1_sel:WORD_1
; GFX8-NEXT: v_add_f16_e32 v0, v0, v1
; GFX8-NEXT: v_or_b32_e32 v0, v0, v2
; GFX8-NEXT: s_setpc_b64 s[30:31]
;
; GFX10PLUS-LABEL: v_constained_fadd_v2f16_fpexcept_maytrap:
; GFX10PLUS: ; %bb.0:
; GFX10PLUS-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GFX10PLUS-NEXT: v_pk_add_f16 v0, v0, v1
; GFX10PLUS-NEXT: s_setpc_b64 s[30:31]
%val = call <2 x half> @llvm.experimental.constrained.fadd.v2f16(<2 x half> %x, <2 x half> %y, metadata !"round.tonearest", metadata !"fpexcept.maytrap")
ret <2 x half> %val
}
define <3 x half> @v_constained_fadd_v3f16_fpexcept_strict(<3 x half> %x, <3 x half> %y) #0 {
; GFX9-LABEL: v_constained_fadd_v3f16_fpexcept_strict:
; GFX9: ; %bb.0:
; GFX9-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GFX9-NEXT: v_pk_add_f16 v0, v0, v2
; GFX9-NEXT: v_add_f16_e32 v1, v1, v3
; GFX9-NEXT: s_setpc_b64 s[30:31]
;
; GFX8-LABEL: v_constained_fadd_v3f16_fpexcept_strict:
; GFX8: ; %bb.0:
; GFX8-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GFX8-NEXT: v_add_f16_sdwa v4, v0, v2 dst_sel:WORD_1 dst_unused:UNUSED_PAD src0_sel:WORD_1 src1_sel:WORD_1
; GFX8-NEXT: v_add_f16_e32 v0, v0, v2
; GFX8-NEXT: v_or_b32_e32 v0, v0, v4
; GFX8-NEXT: v_add_f16_e32 v1, v1, v3
; GFX8-NEXT: s_setpc_b64 s[30:31]
;
; GFX10PLUS-LABEL: v_constained_fadd_v3f16_fpexcept_strict:
; GFX10PLUS: ; %bb.0:
; GFX10PLUS-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GFX10PLUS-NEXT: v_pk_add_f16 v0, v0, v2
; GFX10PLUS-NEXT: v_add_f16_e32 v1, v1, v3
; GFX10PLUS-NEXT: s_setpc_b64 s[30:31]
%val = call <3 x half> @llvm.experimental.constrained.fadd.v3f16(<3 x half> %x, <3 x half> %y, metadata !"round.tonearest", metadata !"fpexcept.strict")
ret <3 x half> %val
}
; FIXME: Scalarized
define <4 x half> @v_constained_fadd_v4f16_fpexcept_strict(<4 x half> %x, <4 x half> %y) #0 {
; GFX9-LABEL: v_constained_fadd_v4f16_fpexcept_strict:
; GFX9: ; %bb.0:
; GFX9-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GFX9-NEXT: v_add_f16_sdwa v4, v1, v3 dst_sel:DWORD dst_unused:UNUSED_PAD src0_sel:WORD_1 src1_sel:WORD_1
; GFX9-NEXT: v_add_f16_sdwa v5, v0, v2 dst_sel:DWORD dst_unused:UNUSED_PAD src0_sel:WORD_1 src1_sel:WORD_1
; GFX9-NEXT: v_add_f16_e32 v1, v1, v3
; GFX9-NEXT: v_add_f16_e32 v0, v0, v2
; GFX9-NEXT: s_mov_b32 s4, 0x5040100
; GFX9-NEXT: v_perm_b32 v0, v5, v0, s4
; GFX9-NEXT: v_perm_b32 v1, v4, v1, s4
; GFX9-NEXT: s_setpc_b64 s[30:31]
;
; GFX8-LABEL: v_constained_fadd_v4f16_fpexcept_strict:
; GFX8: ; %bb.0:
; GFX8-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GFX8-NEXT: v_add_f16_sdwa v4, v1, v3 dst_sel:WORD_1 dst_unused:UNUSED_PAD src0_sel:WORD_1 src1_sel:WORD_1
; GFX8-NEXT: v_add_f16_sdwa v5, v0, v2 dst_sel:WORD_1 dst_unused:UNUSED_PAD src0_sel:WORD_1 src1_sel:WORD_1
; GFX8-NEXT: v_add_f16_e32 v1, v1, v3
; GFX8-NEXT: v_add_f16_e32 v0, v0, v2
; GFX8-NEXT: v_or_b32_e32 v0, v0, v5
; GFX8-NEXT: v_or_b32_e32 v1, v1, v4
; GFX8-NEXT: s_setpc_b64 s[30:31]
;
; GFX10-LABEL: v_constained_fadd_v4f16_fpexcept_strict:
; GFX10: ; %bb.0:
; GFX10-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GFX10-NEXT: v_add_f16_sdwa v4, v1, v3 dst_sel:DWORD dst_unused:UNUSED_PAD src0_sel:WORD_1 src1_sel:WORD_1
; GFX10-NEXT: v_add_f16_sdwa v5, v0, v2 dst_sel:DWORD dst_unused:UNUSED_PAD src0_sel:WORD_1 src1_sel:WORD_1
; GFX10-NEXT: v_add_f16_e32 v0, v0, v2
; GFX10-NEXT: v_add_f16_e32 v1, v1, v3
; GFX10-NEXT: v_perm_b32 v0, v5, v0, 0x5040100
; GFX10-NEXT: v_perm_b32 v1, v4, v1, 0x5040100
; GFX10-NEXT: s_setpc_b64 s[30:31]
;
; GFX11-LABEL: v_constained_fadd_v4f16_fpexcept_strict:
; GFX11: ; %bb.0:
; GFX11-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GFX11-NEXT: v_lshrrev_b32_e32 v4, 16, v3
; GFX11-NEXT: v_lshrrev_b32_e32 v5, 16, v2
; GFX11-NEXT: v_lshrrev_b32_e32 v6, 16, v0
; GFX11-NEXT: v_lshrrev_b32_e32 v7, 16, v1
; GFX11-NEXT: v_add_f16_e32 v1, v1, v3
; GFX11-NEXT: v_add_f16_e32 v0, v0, v2
; GFX11-NEXT: v_add_f16_e32 v2, v6, v5
; GFX11-NEXT: v_add_f16_e32 v3, v7, v4
; GFX11-NEXT: v_perm_b32 v0, v2, v0, 0x5040100
; GFX11-NEXT: v_perm_b32 v1, v3, v1, 0x5040100
; GFX11-NEXT: s_setpc_b64 s[30:31]
%val = call <4 x half> @llvm.experimental.constrained.fadd.v4f16(<4 x half> %x, <4 x half> %y, metadata !"round.tonearest", metadata !"fpexcept.strict")
ret <4 x half> %val
}
define amdgpu_ps half @s_constained_fadd_f16_fpexcept_strict(half inreg %x, half inreg %y) #0 {
; GCN-LABEL: s_constained_fadd_f16_fpexcept_strict:
; GCN: ; %bb.0:
; GCN-NEXT: v_mov_b32_e32 v0, s3
; GCN-NEXT: v_add_f16_e32 v0, s2, v0
; GCN-NEXT: ; return to shader part epilog
;
; GFX10PLUS-LABEL: s_constained_fadd_f16_fpexcept_strict:
; GFX10PLUS: ; %bb.0:
; GFX10PLUS-NEXT: v_add_f16_e64 v0, s2, s3
; GFX10PLUS-NEXT: ; return to shader part epilog
%val = call half @llvm.experimental.constrained.fadd.f16(half %x, half %y, metadata !"round.tonearest", metadata !"fpexcept.strict")
ret half %val
}
define amdgpu_ps <2 x half> @s_constained_fadd_v2f16_fpexcept_strict(<2 x half> inreg %x, <2 x half> inreg %y) #0 {
; GFX9-LABEL: s_constained_fadd_v2f16_fpexcept_strict:
; GFX9: ; %bb.0:
; GFX9-NEXT: v_mov_b32_e32 v0, s3
; GFX9-NEXT: v_pk_add_f16 v0, s2, v0
; GFX9-NEXT: ; return to shader part epilog
;
; GFX8-LABEL: s_constained_fadd_v2f16_fpexcept_strict:
; GFX8: ; %bb.0:
; GFX8-NEXT: s_lshr_b32 s0, s3, 16
; GFX8-NEXT: s_lshr_b32 s1, s2, 16
; GFX8-NEXT: v_mov_b32_e32 v0, s0
; GFX8-NEXT: v_mov_b32_e32 v1, s1
; GFX8-NEXT: v_add_f16_sdwa v0, v1, v0 dst_sel:WORD_1 dst_unused:UNUSED_PAD src0_sel:DWORD src1_sel:DWORD
; GFX8-NEXT: v_mov_b32_e32 v1, s3
; GFX8-NEXT: v_add_f16_e32 v1, s2, v1
; GFX8-NEXT: v_or_b32_e32 v0, v1, v0
; GFX8-NEXT: ; return to shader part epilog
;
; GFX10PLUS-LABEL: s_constained_fadd_v2f16_fpexcept_strict:
; GFX10PLUS: ; %bb.0:
; GFX10PLUS-NEXT: v_pk_add_f16 v0, s2, s3
; GFX10PLUS-NEXT: ; return to shader part epilog
%val = call <2 x half> @llvm.experimental.constrained.fadd.v2f16(<2 x half> %x, <2 x half> %y, metadata !"round.tonearest", metadata !"fpexcept.strict")
ret <2 x half> %val
}
declare half @llvm.experimental.constrained.fadd.f16(half, half, metadata, metadata) #1
declare <2 x half> @llvm.experimental.constrained.fadd.v2f16(<2 x half>, <2 x half>, metadata, metadata) #1
declare <3 x half> @llvm.experimental.constrained.fadd.v3f16(<3 x half>, <3 x half>, metadata, metadata) #1
declare <4 x half> @llvm.experimental.constrained.fadd.v4f16(<4 x half>, <4 x half>, metadata, metadata) #1
attributes #0 = { strictfp }
attributes #1 = { inaccessiblememonly nounwind willreturn }
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