1 ; NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
2 ; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx900 -stop-after=finalize-isel -o - %s | FileCheck -check-prefix=GCN %s
4 ; Make sure nofpexcept flags are emitted when lowering a
5 ; non-constrained fdiv.
7 define float @fdiv_f32(float %a, float %b) #0 {
8 ; GCN-LABEL: name: fdiv_f32
10 ; GCN-NEXT: liveins: $vgpr0, $vgpr1
12 ; GCN-NEXT: [[COPY:%[0-9]+]]:vgpr_32 = COPY $vgpr1
13 ; GCN-NEXT: [[COPY1:%[0-9]+]]:vgpr_32 = COPY $vgpr0
14 ; GCN-NEXT: [[V_DIV_SCALE_F32_e64_:%[0-9]+]]:vgpr_32, [[V_DIV_SCALE_F32_e64_1:%[0-9]+]]:sreg_64 = nofpexcept V_DIV_SCALE_F32_e64 0, [[COPY1]], 0, [[COPY]], 0, [[COPY1]], 0, 0, implicit $mode, implicit $exec
15 ; GCN-NEXT: [[V_DIV_SCALE_F32_e64_2:%[0-9]+]]:vgpr_32, [[V_DIV_SCALE_F32_e64_3:%[0-9]+]]:sreg_64 = nofpexcept V_DIV_SCALE_F32_e64 0, [[COPY]], 0, [[COPY]], 0, [[COPY1]], 0, 0, implicit $mode, implicit $exec
16 ; GCN-NEXT: [[V_RCP_F32_e64_:%[0-9]+]]:vgpr_32 = nofpexcept V_RCP_F32_e64 0, [[V_DIV_SCALE_F32_e64_2]], 0, 0, implicit $mode, implicit $exec
17 ; GCN-NEXT: [[S_MOV_B32_:%[0-9]+]]:sreg_32 = S_MOV_B32 3
18 ; GCN-NEXT: [[S_MOV_B32_1:%[0-9]+]]:sgpr_32 = S_MOV_B32 1065353216
19 ; GCN-NEXT: [[S_MOV_B32_2:%[0-9]+]]:sreg_32 = S_MOV_B32 0
20 ; GCN-NEXT: S_SETREG_B32_mode killed [[S_MOV_B32_]], 2305, implicit-def $mode, implicit $mode
21 ; GCN-NEXT: [[V_FMA_F32_e64_:%[0-9]+]]:vgpr_32 = nofpexcept V_FMA_F32_e64 1, [[V_DIV_SCALE_F32_e64_2]], 0, [[V_RCP_F32_e64_]], 0, killed [[S_MOV_B32_1]], 0, 0, implicit $mode, implicit $exec
22 ; GCN-NEXT: [[V_FMA_F32_e64_1:%[0-9]+]]:vgpr_32 = nofpexcept V_FMA_F32_e64 0, killed [[V_FMA_F32_e64_]], 0, [[V_RCP_F32_e64_]], 0, [[V_RCP_F32_e64_]], 0, 0, implicit $mode, implicit $exec
23 ; GCN-NEXT: [[V_MUL_F32_e64_:%[0-9]+]]:vgpr_32 = nofpexcept V_MUL_F32_e64 0, [[V_DIV_SCALE_F32_e64_]], 0, [[V_FMA_F32_e64_1]], 0, 0, implicit $mode, implicit $exec
24 ; GCN-NEXT: [[V_FMA_F32_e64_2:%[0-9]+]]:vgpr_32 = nofpexcept V_FMA_F32_e64 1, [[V_DIV_SCALE_F32_e64_2]], 0, [[V_MUL_F32_e64_]], 0, [[V_DIV_SCALE_F32_e64_]], 0, 0, implicit $mode, implicit $exec
25 ; GCN-NEXT: [[V_FMA_F32_e64_3:%[0-9]+]]:vgpr_32 = nofpexcept V_FMA_F32_e64 0, killed [[V_FMA_F32_e64_2]], 0, [[V_FMA_F32_e64_1]], 0, [[V_MUL_F32_e64_]], 0, 0, implicit $mode, implicit $exec
26 ; GCN-NEXT: [[V_FMA_F32_e64_4:%[0-9]+]]:vgpr_32 = nofpexcept V_FMA_F32_e64 1, [[V_DIV_SCALE_F32_e64_2]], 0, [[V_FMA_F32_e64_3]], 0, [[V_DIV_SCALE_F32_e64_]], 0, 0, implicit $mode, implicit $exec
27 ; GCN-NEXT: S_SETREG_B32_mode killed [[S_MOV_B32_2]], 2305, implicit-def dead $mode, implicit $mode
28 ; GCN-NEXT: $vcc = COPY [[V_DIV_SCALE_F32_e64_1]]
29 ; GCN-NEXT: [[V_DIV_FMAS_F32_e64_:%[0-9]+]]:vgpr_32 = nofpexcept V_DIV_FMAS_F32_e64 0, killed [[V_FMA_F32_e64_4]], 0, [[V_FMA_F32_e64_1]], 0, [[V_FMA_F32_e64_3]], 0, 0, implicit $mode, implicit $vcc, implicit $exec
30 ; GCN-NEXT: [[V_DIV_FIXUP_F32_e64_:%[0-9]+]]:vgpr_32 = nofpexcept V_DIV_FIXUP_F32_e64 0, killed [[V_DIV_FMAS_F32_e64_]], 0, [[COPY]], 0, [[COPY1]], 0, 0, implicit $mode, implicit $exec
31 ; GCN-NEXT: $vgpr0 = COPY [[V_DIV_FIXUP_F32_e64_]]
32 ; GCN-NEXT: SI_RETURN implicit $vgpr0
34 %fdiv = fdiv float %a, %b
38 define float @fdiv_nnan_f32(float %a, float %b) #0 {
39 ; GCN-LABEL: name: fdiv_nnan_f32
41 ; GCN-NEXT: liveins: $vgpr0, $vgpr1
43 ; GCN-NEXT: [[COPY:%[0-9]+]]:vgpr_32 = COPY $vgpr1
44 ; GCN-NEXT: [[COPY1:%[0-9]+]]:vgpr_32 = COPY $vgpr0
45 ; GCN-NEXT: [[V_DIV_SCALE_F32_e64_:%[0-9]+]]:vgpr_32, [[V_DIV_SCALE_F32_e64_1:%[0-9]+]]:sreg_64 = nnan nofpexcept V_DIV_SCALE_F32_e64 0, [[COPY1]], 0, [[COPY]], 0, [[COPY1]], 0, 0, implicit $mode, implicit $exec
46 ; GCN-NEXT: [[V_DIV_SCALE_F32_e64_2:%[0-9]+]]:vgpr_32, [[V_DIV_SCALE_F32_e64_3:%[0-9]+]]:sreg_64 = nnan nofpexcept V_DIV_SCALE_F32_e64 0, [[COPY]], 0, [[COPY]], 0, [[COPY1]], 0, 0, implicit $mode, implicit $exec
47 ; GCN-NEXT: [[V_RCP_F32_e64_:%[0-9]+]]:vgpr_32 = nnan nofpexcept V_RCP_F32_e64 0, [[V_DIV_SCALE_F32_e64_2]], 0, 0, implicit $mode, implicit $exec
48 ; GCN-NEXT: [[S_MOV_B32_:%[0-9]+]]:sreg_32 = S_MOV_B32 3
49 ; GCN-NEXT: [[S_MOV_B32_1:%[0-9]+]]:sgpr_32 = S_MOV_B32 1065353216
50 ; GCN-NEXT: [[S_MOV_B32_2:%[0-9]+]]:sreg_32 = S_MOV_B32 0
51 ; GCN-NEXT: S_SETREG_B32_mode killed [[S_MOV_B32_]], 2305, implicit-def $mode, implicit $mode
52 ; GCN-NEXT: [[V_FMA_F32_e64_:%[0-9]+]]:vgpr_32 = nnan nofpexcept V_FMA_F32_e64 1, [[V_DIV_SCALE_F32_e64_2]], 0, [[V_RCP_F32_e64_]], 0, killed [[S_MOV_B32_1]], 0, 0, implicit $mode, implicit $exec
53 ; GCN-NEXT: [[V_FMA_F32_e64_1:%[0-9]+]]:vgpr_32 = nnan nofpexcept V_FMA_F32_e64 0, killed [[V_FMA_F32_e64_]], 0, [[V_RCP_F32_e64_]], 0, [[V_RCP_F32_e64_]], 0, 0, implicit $mode, implicit $exec
54 ; GCN-NEXT: [[V_MUL_F32_e64_:%[0-9]+]]:vgpr_32 = nnan nofpexcept V_MUL_F32_e64 0, [[V_DIV_SCALE_F32_e64_]], 0, [[V_FMA_F32_e64_1]], 0, 0, implicit $mode, implicit $exec
55 ; GCN-NEXT: [[V_FMA_F32_e64_2:%[0-9]+]]:vgpr_32 = nnan nofpexcept V_FMA_F32_e64 1, [[V_DIV_SCALE_F32_e64_2]], 0, [[V_MUL_F32_e64_]], 0, [[V_DIV_SCALE_F32_e64_]], 0, 0, implicit $mode, implicit $exec
56 ; GCN-NEXT: [[V_FMA_F32_e64_3:%[0-9]+]]:vgpr_32 = nnan nofpexcept V_FMA_F32_e64 0, killed [[V_FMA_F32_e64_2]], 0, [[V_FMA_F32_e64_1]], 0, [[V_MUL_F32_e64_]], 0, 0, implicit $mode, implicit $exec
57 ; GCN-NEXT: [[V_FMA_F32_e64_4:%[0-9]+]]:vgpr_32 = nnan nofpexcept V_FMA_F32_e64 1, [[V_DIV_SCALE_F32_e64_2]], 0, [[V_FMA_F32_e64_3]], 0, [[V_DIV_SCALE_F32_e64_]], 0, 0, implicit $mode, implicit $exec
58 ; GCN-NEXT: S_SETREG_B32_mode killed [[S_MOV_B32_2]], 2305, implicit-def dead $mode, implicit $mode
59 ; GCN-NEXT: $vcc = COPY [[V_DIV_SCALE_F32_e64_1]]
60 ; GCN-NEXT: [[V_DIV_FMAS_F32_e64_:%[0-9]+]]:vgpr_32 = nnan nofpexcept V_DIV_FMAS_F32_e64 0, killed [[V_FMA_F32_e64_4]], 0, [[V_FMA_F32_e64_1]], 0, [[V_FMA_F32_e64_3]], 0, 0, implicit $mode, implicit $vcc, implicit $exec
61 ; GCN-NEXT: [[V_DIV_FIXUP_F32_e64_:%[0-9]+]]:vgpr_32 = nnan nofpexcept V_DIV_FIXUP_F32_e64 0, killed [[V_DIV_FMAS_F32_e64_]], 0, [[COPY]], 0, [[COPY1]], 0, 0, implicit $mode, implicit $exec
62 ; GCN-NEXT: $vgpr0 = COPY [[V_DIV_FIXUP_F32_e64_]]
63 ; GCN-NEXT: SI_RETURN implicit $vgpr0
65 %fdiv = fdiv nnan float %a, %b
69 attributes #0 = { nounwind "denormal-fp-math-f32"="preserve-sign,preserve-sign" }