From 800de3f8d5490bd2b9c590d3cd55509536fac8cc Mon Sep 17 00:00:00 2001 From: "Kevin P. Neal" Date: Mon, 26 Jul 2021 13:57:12 -0400 Subject: [PATCH] [FPEnv][InstSimplify] Enable more folds for constrained fadd Precommit tests, try 2. My tree is up-to-date as of this morning so this should go better than my first try. --- test/Transforms/InstSimplify/strictfp-fadd.ll | 346 ++++++++++++++++++ 1 file changed, 346 insertions(+) create mode 100644 test/Transforms/InstSimplify/strictfp-fadd.ll diff --git a/test/Transforms/InstSimplify/strictfp-fadd.ll b/test/Transforms/InstSimplify/strictfp-fadd.ll new file mode 100644 index 00000000000..72c3350a40d --- /dev/null +++ b/test/Transforms/InstSimplify/strictfp-fadd.ll @@ -0,0 +1,346 @@ +; NOTE: Assertions have been autogenerated by utils/update_test_checks.py +; RUN: opt < %s -instsimplify -S | FileCheck %s + +; +; constrained fadd +; + +; +; fadd X, -0 ==> X +; + +define float @fadd_x_n0_defaultenv(float %a) #0 { +; CHECK-LABEL: @fadd_x_n0_defaultenv( +; CHECK-NEXT: ret float [[A:%.*]] +; + %ret = call float @llvm.experimental.constrained.fadd.f32(float %a, float -0.0, metadata !"round.tonearest", metadata !"fpexcept.ignore") #0 + ret float %ret +} + +define <2 x float> @fadd_vec_x_n0_defaultenv(<2 x float> %a) #0 { +; CHECK-LABEL: @fadd_vec_x_n0_defaultenv( +; CHECK-NEXT: ret <2 x float> [[A:%.*]] +; + %ret = call <2 x float> @llvm.experimental.constrained.fadd.v2f32(<2 x float> %a, <2 x float>, metadata !"round.tonearest", metadata !"fpexcept.ignore") #0 + ret <2 x float> %ret +} + +define float @fadd_x_n0_ebmaytrap(float %a) #0 { +; CHECK-LABEL: @fadd_x_n0_ebmaytrap( +; CHECK-NEXT: [[RET:%.*]] = call float @llvm.experimental.constrained.fadd.f32(float [[A:%.*]], float -0.000000e+00, metadata !"round.tonearest", metadata !"fpexcept.maytrap") #[[ATTR0:[0-9]+]] +; CHECK-NEXT: ret float [[RET]] +; + %ret = call float @llvm.experimental.constrained.fadd.f32(float %a, float -0.0, metadata !"round.tonearest", metadata !"fpexcept.maytrap") #0 + ret float %ret +} + +define <2 x float> @fadd_vec_x_n0_ebmaytrap(<2 x float> %a) #0 { +; CHECK-LABEL: @fadd_vec_x_n0_ebmaytrap( +; CHECK-NEXT: [[RET:%.*]] = call <2 x float> @llvm.experimental.constrained.fadd.v2f32(<2 x float> [[A:%.*]], <2 x float> , metadata !"round.tonearest", metadata !"fpexcept.maytrap") #[[ATTR0]] +; CHECK-NEXT: ret <2 x float> [[RET]] +; + %ret = call <2 x float> @llvm.experimental.constrained.fadd.v2f32(<2 x float> %a, <2 x float>, metadata !"round.tonearest", metadata !"fpexcept.maytrap") #0 + ret <2 x float> %ret +} + +define float @fadd_x_n0_ebstrict(float %a) #0 { +; CHECK-LABEL: @fadd_x_n0_ebstrict( +; CHECK-NEXT: [[RET:%.*]] = call float @llvm.experimental.constrained.fadd.f32(float [[A:%.*]], float -0.000000e+00, metadata !"round.tonearest", metadata !"fpexcept.strict") #[[ATTR0]] +; CHECK-NEXT: ret float [[RET]] +; + %ret = call float @llvm.experimental.constrained.fadd.f32(float %a, float -0.0, metadata !"round.tonearest", metadata !"fpexcept.strict") #0 + ret float %ret +} + +define <2 x float> @fadd_vec_x_n0_ebstrict(<2 x float> %a) #0 { +; CHECK-LABEL: @fadd_vec_x_n0_ebstrict( +; CHECK-NEXT: [[RET:%.*]] = call <2 x float> @llvm.experimental.constrained.fadd.v2f32(<2 x float> [[A:%.*]], <2 x float> , metadata !"round.tonearest", metadata !"fpexcept.strict") #[[ATTR0]] +; CHECK-NEXT: ret <2 x float> [[RET]] +; + %ret = call <2 x float> @llvm.experimental.constrained.fadd.v2f32(<2 x float> %a, <2 x float>, metadata !"round.tonearest", metadata !"fpexcept.strict") #0 + ret <2 x float> %ret +} + +define float @fadd_x_n0_neginf(float %a) #0 { +; CHECK-LABEL: @fadd_x_n0_neginf( +; CHECK-NEXT: [[RET:%.*]] = call float @llvm.experimental.constrained.fadd.f32(float [[A:%.*]], float -0.000000e+00, metadata !"round.downward", metadata !"fpexcept.ignore") #[[ATTR0]] +; CHECK-NEXT: ret float [[RET]] +; + %ret = call float @llvm.experimental.constrained.fadd.f32(float %a, float -0.0, metadata !"round.downward", metadata !"fpexcept.ignore") #0 + ret float %ret +} + +define <2 x float> @fadd_vec_x_n0_neginf(<2 x float> %a) #0 { +; CHECK-LABEL: @fadd_vec_x_n0_neginf( +; CHECK-NEXT: [[RET:%.*]] = call <2 x float> @llvm.experimental.constrained.fadd.v2f32(<2 x float> [[A:%.*]], <2 x float> , metadata !"round.downward", metadata !"fpexcept.ignore") #[[ATTR0]] +; CHECK-NEXT: ret <2 x float> [[RET]] +; + %ret = call <2 x float> @llvm.experimental.constrained.fadd.v2f32(<2 x float> %a, <2 x float>, metadata !"round.downward", metadata !"fpexcept.ignore") #0 + ret <2 x float> %ret +} + +define float @fadd_x_n0_dynamic(float %a) #0 { +; CHECK-LABEL: @fadd_x_n0_dynamic( +; CHECK-NEXT: [[RET:%.*]] = call float @llvm.experimental.constrained.fadd.f32(float [[A:%.*]], float -0.000000e+00, metadata !"round.dynamic", metadata !"fpexcept.ignore") #[[ATTR0]] +; CHECK-NEXT: ret float [[RET]] +; + %ret = call float @llvm.experimental.constrained.fadd.f32(float %a, float -0.0, metadata !"round.dynamic", metadata !"fpexcept.ignore") #0 + ret float %ret +} + +define <2 x float> @fadd_vec_x_n0_dynamic(<2 x float> %a) #0 { +; CHECK-LABEL: @fadd_vec_x_n0_dynamic( +; CHECK-NEXT: [[RET:%.*]] = call <2 x float> @llvm.experimental.constrained.fadd.v2f32(<2 x float> [[A:%.*]], <2 x float> , metadata !"round.dynamic", metadata !"fpexcept.ignore") #[[ATTR0]] +; CHECK-NEXT: ret <2 x float> [[RET]] +; + %ret = call <2 x float> @llvm.experimental.constrained.fadd.v2f32(<2 x float> %a, <2 x float>, metadata !"round.dynamic", metadata !"fpexcept.ignore") #0 + ret <2 x float> %ret +} + +; The rounding mode here needs to not be { tonearest, downward, dynamic }. +; Test one of the remaining rounding modes and the rest will be fine. +define float @fadd_x_n0_towardzero(float %a) #0 { +; CHECK-LABEL: @fadd_x_n0_towardzero( +; CHECK-NEXT: [[RET:%.*]] = call float @llvm.experimental.constrained.fadd.f32(float [[A:%.*]], float -0.000000e+00, metadata !"round.towardzero", metadata !"fpexcept.ignore") #[[ATTR0]] +; CHECK-NEXT: ret float [[RET]] +; + %ret = call float @llvm.experimental.constrained.fadd.f32(float %a, float -0.0, metadata !"round.towardzero", metadata !"fpexcept.ignore") #0 + ret float %ret +} + +; The rounding mode here needs to not be { tonearest, downward, dynamic }. +; Test one of the remaining rounding modes and the rest will be fine. +define <2 x float> @fadd_vec_x_n0_towardzero(<2 x float> %a) #0 { +; CHECK-LABEL: @fadd_vec_x_n0_towardzero( +; CHECK-NEXT: [[RET:%.*]] = call <2 x float> @llvm.experimental.constrained.fadd.v2f32(<2 x float> [[A:%.*]], <2 x float> , metadata !"round.towardzero", metadata !"fpexcept.ignore") #[[ATTR0]] +; CHECK-NEXT: ret <2 x float> [[RET]] +; + %ret = call <2 x float> @llvm.experimental.constrained.fadd.v2f32(<2 x float> %a, <2 x float>, metadata !"round.towardzero", metadata !"fpexcept.ignore") #0 + ret <2 x float> %ret +} + +define float @fadd_nnan_x_n0_ebstrict(float %a) #0 { +; CHECK-LABEL: @fadd_nnan_x_n0_ebstrict( +; CHECK-NEXT: [[RET:%.*]] = call nnan float @llvm.experimental.constrained.fadd.f32(float [[A:%.*]], float -0.000000e+00, metadata !"round.tonearest", metadata !"fpexcept.strict") #[[ATTR0]] +; CHECK-NEXT: ret float [[RET]] +; + %ret = call nnan float @llvm.experimental.constrained.fadd.f32(float %a, float -0.0, metadata !"round.tonearest", metadata !"fpexcept.strict") #0 + ret float %ret +} + +define <2 x float> @fadd_vec_nnan_x_n0_ebstrict(<2 x float> %a) #0 { +; CHECK-LABEL: @fadd_vec_nnan_x_n0_ebstrict( +; CHECK-NEXT: [[RET:%.*]] = call nnan <2 x float> @llvm.experimental.constrained.fadd.v2f32(<2 x float> [[A:%.*]], <2 x float> , metadata !"round.tonearest", metadata !"fpexcept.strict") #[[ATTR0]] +; CHECK-NEXT: ret <2 x float> [[RET]] +; + %ret = call nnan <2 x float> @llvm.experimental.constrained.fadd.v2f32(<2 x float> %a, <2 x float>, metadata !"round.tonearest", metadata !"fpexcept.strict") #0 + ret <2 x float> %ret +} + +; Test with a fast math flag set but that flag is not "nnan". +define float @fadd_ninf_x_n0_ebstrict(float %a) #0 { +; CHECK-LABEL: @fadd_ninf_x_n0_ebstrict( +; CHECK-NEXT: [[RET:%.*]] = call ninf float @llvm.experimental.constrained.fadd.f32(float [[A:%.*]], float -0.000000e+00, metadata !"round.tonearest", metadata !"fpexcept.strict") #[[ATTR0]] +; CHECK-NEXT: ret float [[RET]] +; + %ret = call ninf float @llvm.experimental.constrained.fadd.f32(float %a, float -0.0, metadata !"round.tonearest", metadata !"fpexcept.strict") #0 + ret float %ret +} + +; Test with a fast math flag set but that flag is not "nnan". +define <2 x float> @fadd_vec_ninf_x_n0_ebstrict(<2 x float> %a) #0 { +; CHECK-LABEL: @fadd_vec_ninf_x_n0_ebstrict( +; CHECK-NEXT: [[RET:%.*]] = call ninf <2 x float> @llvm.experimental.constrained.fadd.v2f32(<2 x float> [[A:%.*]], <2 x float> , metadata !"round.tonearest", metadata !"fpexcept.strict") #[[ATTR0]] +; CHECK-NEXT: ret <2 x float> [[RET]] +; + %ret = call ninf <2 x float> @llvm.experimental.constrained.fadd.v2f32(<2 x float> %a, <2 x float>, metadata !"round.tonearest", metadata !"fpexcept.strict") #0 + ret <2 x float> %ret +} + +define float @fadd_n0_x_defaultenv(float %a) #0 { +; CHECK-LABEL: @fadd_n0_x_defaultenv( +; CHECK-NEXT: ret float [[A:%.*]] +; + %ret = call float @llvm.experimental.constrained.fadd.f32(float -0.0, float %a, metadata !"round.tonearest", metadata !"fpexcept.ignore") #0 + ret float %ret +} + +define <2 x float> @fadd_vec_n0_x_defaultenv(<2 x float> %a) #0 { +; CHECK-LABEL: @fadd_vec_n0_x_defaultenv( +; CHECK-NEXT: ret <2 x float> [[A:%.*]] +; + %ret = call <2 x float> @llvm.experimental.constrained.fadd.v2f32(<2 x float>, <2 x float> %a, metadata !"round.tonearest", metadata !"fpexcept.ignore") #0 + ret <2 x float> %ret +} + +; TODO: Canonicalize the order of the arguments. Then this will fire. +define float @fadd_n0_x_ebmaytrap(float %a) #0 { +; CHECK-LABEL: @fadd_n0_x_ebmaytrap( +; CHECK-NEXT: [[RET:%.*]] = call float @llvm.experimental.constrained.fadd.f32(float -0.000000e+00, float [[A:%.*]], metadata !"round.tonearest", metadata !"fpexcept.maytrap") #[[ATTR0]] +; CHECK-NEXT: ret float [[RET]] +; + %ret = call float @llvm.experimental.constrained.fadd.f32(float -0.0, float %a, metadata !"round.tonearest", metadata !"fpexcept.maytrap") #0 + ret float %ret +} + +; TODO: Canonicalize the order of the arguments. Then this will fire. +define <2 x float> @fadd_vec_n0_x_ebmaytrap(<2 x float> %a) #0 { +; CHECK-LABEL: @fadd_vec_n0_x_ebmaytrap( +; CHECK-NEXT: [[RET:%.*]] = call <2 x float> @llvm.experimental.constrained.fadd.v2f32(<2 x float> , <2 x float> [[A:%.*]], metadata !"round.tonearest", metadata !"fpexcept.maytrap") #[[ATTR0]] +; CHECK-NEXT: ret <2 x float> [[RET]] +; + %ret = call <2 x float> @llvm.experimental.constrained.fadd.v2f32(<2 x float>, <2 x float> %a, metadata !"round.tonearest", metadata !"fpexcept.maytrap") #0 + ret <2 x float> %ret +} + +; +; fadd X, 0 ==> X, when we know X is not -0 +; + +define float @fold_fadd_nsz_x_0_defaultenv(float %a) #0 { +; CHECK-LABEL: @fold_fadd_nsz_x_0_defaultenv( +; CHECK-NEXT: ret float [[A:%.*]] +; + %add = call nsz float @llvm.experimental.constrained.fadd.f32(float %a, float 0.0, metadata !"round.tonearest", metadata !"fpexcept.ignore") #0 + ret float %add +} + +define <2 x float> @fold_fadd_vec_nsz_x_0_defaultenv(<2 x float> %a) #0 { +; CHECK-LABEL: @fold_fadd_vec_nsz_x_0_defaultenv( +; CHECK-NEXT: ret <2 x float> [[A:%.*]] +; + %add = call nsz <2 x float> @llvm.experimental.constrained.fadd.v2f32(<2 x float> %a, <2 x float> zeroinitializer, metadata !"round.tonearest", metadata !"fpexcept.ignore") #0 + ret <2 x float> %add +} + +define float @fold_fadd_nsz_x_0_ebmaytrap(float %a) #0 { +; CHECK-LABEL: @fold_fadd_nsz_x_0_ebmaytrap( +; CHECK-NEXT: [[ADD:%.*]] = call nsz float @llvm.experimental.constrained.fadd.f32(float [[A:%.*]], float 0.000000e+00, metadata !"round.tonearest", metadata !"fpexcept.maytrap") #[[ATTR0]] +; CHECK-NEXT: ret float [[ADD]] +; + %add = call nsz float @llvm.experimental.constrained.fadd.f32(float %a, float 0.0, metadata !"round.tonearest", metadata !"fpexcept.maytrap") #0 + ret float %add +} + +define <2 x float> @fold_fadd_vec_nsz_x_0_ebmaytrap(<2 x float> %a) #0 { +; CHECK-LABEL: @fold_fadd_vec_nsz_x_0_ebmaytrap( +; CHECK-NEXT: [[ADD:%.*]] = call nsz <2 x float> @llvm.experimental.constrained.fadd.v2f32(<2 x float> [[A:%.*]], <2 x float> zeroinitializer, metadata !"round.tonearest", metadata !"fpexcept.maytrap") #[[ATTR0]] +; CHECK-NEXT: ret <2 x float> [[ADD]] +; + %add = call nsz <2 x float> @llvm.experimental.constrained.fadd.v2f32(<2 x float> %a, <2 x float> zeroinitializer, metadata !"round.tonearest", metadata !"fpexcept.maytrap") #0 + ret <2 x float> %add +} + +define float @fold_fadd_nsz_x_0_ebstrict(float %a) #0 { +; CHECK-LABEL: @fold_fadd_nsz_x_0_ebstrict( +; CHECK-NEXT: [[ADD:%.*]] = call nsz float @llvm.experimental.constrained.fadd.f32(float [[A:%.*]], float 0.000000e+00, metadata !"round.tonearest", metadata !"fpexcept.strict") #[[ATTR0]] +; CHECK-NEXT: ret float [[ADD]] +; + %add = call nsz float @llvm.experimental.constrained.fadd.f32(float %a, float 0.0, metadata !"round.tonearest", metadata !"fpexcept.strict") #0 + ret float %add +} + +define <2 x float> @fold_fadd_vec_nsz_x_0_ebstrict(<2 x float> %a) #0 { +; CHECK-LABEL: @fold_fadd_vec_nsz_x_0_ebstrict( +; CHECK-NEXT: [[ADD:%.*]] = call nsz <2 x float> @llvm.experimental.constrained.fadd.v2f32(<2 x float> [[A:%.*]], <2 x float> zeroinitializer, metadata !"round.tonearest", metadata !"fpexcept.strict") #[[ATTR0]] +; CHECK-NEXT: ret <2 x float> [[ADD]] +; + %add = call nsz <2 x float> @llvm.experimental.constrained.fadd.v2f32(<2 x float> %a, <2 x float> zeroinitializer, metadata !"round.tonearest", metadata !"fpexcept.strict") #0 + ret <2 x float> %add +} + +define float @fold_fadd_nsz_nnan_x_0_ebstrict(float %a) #0 { +; CHECK-LABEL: @fold_fadd_nsz_nnan_x_0_ebstrict( +; CHECK-NEXT: [[ADD:%.*]] = call nnan nsz float @llvm.experimental.constrained.fadd.f32(float [[A:%.*]], float 0.000000e+00, metadata !"round.tonearest", metadata !"fpexcept.strict") #[[ATTR0]] +; CHECK-NEXT: ret float [[ADD]] +; + %add = call nsz nnan float @llvm.experimental.constrained.fadd.f32(float %a, float 0.0, metadata !"round.tonearest", metadata !"fpexcept.strict") #0 + ret float %add +} + +define <2 x float> @fold_fadd_vec_nsz_nnan_x_0_ebstrict(<2 x float> %a) #0 { +; CHECK-LABEL: @fold_fadd_vec_nsz_nnan_x_0_ebstrict( +; CHECK-NEXT: [[ADD:%.*]] = call nnan nsz <2 x float> @llvm.experimental.constrained.fadd.v2f32(<2 x float> [[A:%.*]], <2 x float> zeroinitializer, metadata !"round.tonearest", metadata !"fpexcept.strict") #[[ATTR0]] +; CHECK-NEXT: ret <2 x float> [[ADD]] +; + %add = call nsz nnan <2 x float> @llvm.experimental.constrained.fadd.v2f32(<2 x float> %a, <2 x float> zeroinitializer, metadata !"round.tonearest", metadata !"fpexcept.strict") #0 + ret <2 x float> %add +} + +define float @fold_fadd_nsz_0_x_defaultenv(float %a) #0 { +; CHECK-LABEL: @fold_fadd_nsz_0_x_defaultenv( +; CHECK-NEXT: ret float [[A:%.*]] +; + %add = call nsz float @llvm.experimental.constrained.fadd.f32(float 0.0, float %a, metadata !"round.tonearest", metadata !"fpexcept.ignore") #0 + ret float %add +} + +define <2 x float> @fold_fadd_vec_nsz_0_x_defaultenv(<2 x float> %a) #0 { +; CHECK-LABEL: @fold_fadd_vec_nsz_0_x_defaultenv( +; CHECK-NEXT: ret <2 x float> [[A:%.*]] +; + %add = call nsz <2 x float> @llvm.experimental.constrained.fadd.v2f32(<2 x float> zeroinitializer, <2 x float> %a, metadata !"round.tonearest", metadata !"fpexcept.ignore") #0 + ret <2 x float> %add +} + +; TODO: Canonicalize the order of the arguments. Then this will fire. +define float @fold_fadd_nsz_0_x_ebmaytrap(float %a) #0 { +; CHECK-LABEL: @fold_fadd_nsz_0_x_ebmaytrap( +; CHECK-NEXT: [[ADD:%.*]] = call nsz float @llvm.experimental.constrained.fadd.f32(float 0.000000e+00, float [[A:%.*]], metadata !"round.tonearest", metadata !"fpexcept.maytrap") #[[ATTR0]] +; CHECK-NEXT: ret float [[ADD]] +; + %add = call nsz float @llvm.experimental.constrained.fadd.f32(float 0.0, float %a, metadata !"round.tonearest", metadata !"fpexcept.maytrap") #0 + ret float %add +} + +; TODO: Canonicalize the order of the arguments. Then this will fire. +define <2 x float> @fold_fadd_vec_nsz_0_x_ebmaytrap(<2 x float> %a) #0 { +; CHECK-LABEL: @fold_fadd_vec_nsz_0_x_ebmaytrap( +; CHECK-NEXT: [[ADD:%.*]] = call nsz <2 x float> @llvm.experimental.constrained.fadd.v2f32(<2 x float> zeroinitializer, <2 x float> [[A:%.*]], metadata !"round.tonearest", metadata !"fpexcept.maytrap") #[[ATTR0]] +; CHECK-NEXT: ret <2 x float> [[ADD]] +; + %add = call nsz <2 x float> @llvm.experimental.constrained.fadd.v2f32(<2 x float> zeroinitializer, <2 x float> %a, metadata !"round.tonearest", metadata !"fpexcept.maytrap") #0 + ret <2 x float> %add +} + +; +; fadd with NaNs +; + +define float @fold_fadd_qnan_qnan_ebmaytrap() #0 { +; CHECK-LABEL: @fold_fadd_qnan_qnan_ebmaytrap( +; CHECK-NEXT: ret float 0x7FF8000000000000 +; + %add = call float @llvm.experimental.constrained.fadd.f32(float 0x7ff8000000000000, float 0x7ff8000000000000, metadata !"round.tonearest", metadata !"fpexcept.maytrap") #0 + ret float %add +} + +define float @fold_fadd_qnan_qnan_ebstrict() #0 { +; CHECK-LABEL: @fold_fadd_qnan_qnan_ebstrict( +; CHECK-NEXT: ret float 0x7FF8000000000000 +; + %add = call float @llvm.experimental.constrained.fadd.f32(float 0x7ff8000000000000, float 0x7ff8000000000000, metadata !"round.tonearest", metadata !"fpexcept.strict") #0 + ret float %add +} + +define float @fold_fadd_snan_qnan_ebmaytrap() #0 { +; CHECK-LABEL: @fold_fadd_snan_qnan_ebmaytrap( +; CHECK-NEXT: ret float 0x7FFC000000000000 +; + %add = call float @llvm.experimental.constrained.fadd.f32(float 0x7ff4000000000000, float 0x7ff8000000000000, metadata !"round.tonearest", metadata !"fpexcept.maytrap") #0 + ret float %add +} + +define float @fold_fadd_snan_qnan_ebstrict() #0 { +; CHECK-LABEL: @fold_fadd_snan_qnan_ebstrict( +; CHECK-NEXT: [[ADD:%.*]] = call float @llvm.experimental.constrained.fadd.f32(float 0x7FF4000000000000, float 0x7FF8000000000000, metadata !"round.tonearest", metadata !"fpexcept.strict") #[[ATTR0]] +; CHECK-NEXT: ret float [[ADD]] +; + %add = call float @llvm.experimental.constrained.fadd.f32(float 0x7ff4000000000000, float 0x7ff8000000000000, metadata !"round.tonearest", metadata !"fpexcept.strict") #0 + ret float %add +} + +declare float @llvm.experimental.constrained.fadd.f32(float, float, metadata, metadata) #0 +declare <2 x float> @llvm.experimental.constrained.fadd.v2f32(<2 x float>, <2 x float>, metadata, metadata) #0 + +attributes #0 = { strictfp }