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a191db7d99
This patch migrates the math library call simplifications from the
simplify-libcalls pass into the instcombine library call simplifier.
I have typically migrated just one simplifier at a time, but the math
simplifiers are interdependent because:
1. CosOpt, PowOpt, and Exp2Opt all depend on UnaryDoubleFPOpt.
2. CosOpt, PowOpt, Exp2Opt, and UnaryDoubleFPOpt all depend on
the option -enable-double-float-shrink.
These two factors made migrating each of these simplifiers individually
more of a pain than it would be worth. So, I migrated them all together.
llvm-svn: 167815
39 lines
1.3 KiB
LLVM
39 lines
1.3 KiB
LLVM
; Test that the cos library call simplifier works correctly.
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;
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; RUN: opt < %s -instcombine -S | FileCheck %s -check-prefix=NO-FLOAT-SHRINK
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; RUN: opt < %s -instcombine -enable-double-float-shrink -S | FileCheck %s -check-prefix=DO-FLOAT-SHRINK
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
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declare double @cos(double)
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; Check cos(-x) -> cos(x);
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define double @test_simplify1(double %d) {
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; NO-FLOAT-SHRINK: @test_simplify1
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%neg = fsub double -0.000000e+00, %d
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%cos = call double @cos(double %neg)
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; NO-FLOAT-SHRINK: call double @cos(double %d)
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ret double %cos
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}
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define float @test_simplify2(float %f) {
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; DO-FLOAT-SHRINK: @test_simplify2
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%conv1 = fpext float %f to double
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%neg = fsub double -0.000000e+00, %conv1
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%cos = call double @cos(double %neg)
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%conv2 = fptrunc double %cos to float
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; DO-FLOAT-SHRINK: call float @cosf(float %f)
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ret float %conv2
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}
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define float @test_simplify3(float %f) {
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; NO-FLOAT-SHRINK: @test_simplify3
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%conv1 = fpext float %f to double
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%neg = fsub double -0.000000e+00, %conv1
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%cos = call double @cos(double %neg)
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; NO-FLOAT-SHRINK: call double @cos(double %conv1)
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%conv2 = fptrunc double %cos to float
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ret float %conv2
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}
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