Imported Upstream version 5.18.0.167

Former-commit-id: 289509151e0fee68a1b591a20c9f109c3c789d3a

external/llvm/test/Transforms/Util/libcalls-fast-math-inf-loop.ll

@@ -1,60 +0,0 @@
-; RUN: opt -S -instcombine -o - %s | FileCheck %s
-
-; Test that fast math lib call simplification of double math function to float
-; equivalent doesn't occur when the calling function matches the float
-; equivalent math function. Otherwise this can cause the generation of infinite
-; loops when compiled with -O2/3 and fast math.
-
-; Test case C source:
-;
-;   extern double exp(double x);
-;   inline float expf(float x) { return (float) exp((double) x); }
-;   float fn(float f) { return expf(f); }
-;
-; IR generated with command:
-;
-;   clang -cc1 -O2 -ffast-math -emit-llvm -disable-llvm-passes -triple x86_64-unknown-unknown -o - <srcfile>
-
-target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
-target triple = "x86_64-unknown-unknown"
-
-; Function Attrs: nounwind
-define float @fn(float %f) #0 {
-; CHECK: define float @fn(
-; CHECK: call fast float @expf(
-  %f.addr = alloca float, align 4
-  store float %f, float* %f.addr, align 4, !tbaa !1
-  %1 = load float, float* %f.addr, align 4, !tbaa !1
-  %call = call fast float @expf(float %1) #3
-  ret float %call
-}
-
-; Function Attrs: inlinehint nounwind readnone
-define available_externally float @expf(float %x) #1 {
-; CHECK: define available_externally float @expf(
-; CHECK: fpext float
-; CHECK: call fast double @exp(
-; CHECK: fptrunc double
-  %x.addr = alloca float, align 4
-  store float %x, float* %x.addr, align 4, !tbaa !1
-  %1 = load float, float* %x.addr, align 4, !tbaa !1
-  %conv = fpext float %1 to double
-  %call = call fast double @exp(double %conv) #3
-  %conv1 = fptrunc double %call to float
-  ret float %conv1
-}
-
-; Function Attrs: nounwind readnone
-declare double @exp(double) #2
-
-attributes #0 = { nounwind "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-features"="+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
-attributes #1 = { inlinehint nounwind readnone "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-features"="+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
-attributes #2 = { nounwind readnone }
-
-!llvm.ident = !{!0}
-
-!0 = !{!"clang version 5.0.0"}
-!1 = !{!2, !2, i64 0}
-!2 = !{!"float", !3, i64 0}
-!3 = !{!"omnipotent char", !4, i64 0}
-!4 = !{!"Simple C/C++ TBAA"}