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2920a71663
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.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167815 91177308-0d34-0410-b5e6-96231b3b80d8
77 lines
1.9 KiB
LLVM
77 lines
1.9 KiB
LLVM
; Test that the exp2 library call simplifier works correctly.
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;
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; RUN: opt < %s -instcombine -S | FileCheck %s
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target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
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declare double @exp2(double)
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declare float @exp2f(float)
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; Check exp2(sitofp(x)) -> ldexp(1.0, sext(x)).
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define double @test_simplify1(i32 %x) {
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; CHECK: @test_simplify1
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%conv = sitofp i32 %x to double
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%ret = call double @exp2(double %conv)
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; CHECK: call double @ldexp
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ret double %ret
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}
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define double @test_simplify2(i16 signext %x) {
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; CHECK: @test_simplify2
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%conv = sitofp i16 %x to double
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%ret = call double @exp2(double %conv)
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; CHECK: call double @ldexp
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ret double %ret
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}
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define double @test_simplify3(i8 signext %x) {
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; CHECK: @test_simplify3
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%conv = sitofp i8 %x to double
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%ret = call double @exp2(double %conv)
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; CHECK: call double @ldexp
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ret double %ret
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}
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define float @test_simplify4(i32 %x) {
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; CHECK: @test_simplify4
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%conv = sitofp i32 %x to float
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%ret = call float @exp2f(float %conv)
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; CHECK: call float @ldexpf
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ret float %ret
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}
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; Check exp2(uitofp(x)) -> ldexp(1.0, zext(x)).
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define double @test_no_simplify1(i32 %x) {
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; CHECK: @test_no_simplify1
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%conv = uitofp i32 %x to double
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%ret = call double @exp2(double %conv)
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; CHECK: call double @exp2
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ret double %ret
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}
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define double @test_simplify6(i16 zeroext %x) {
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; CHECK: @test_simplify6
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%conv = uitofp i16 %x to double
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%ret = call double @exp2(double %conv)
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; CHECK: call double @ldexp
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ret double %ret
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}
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define double @test_simplify7(i8 zeroext %x) {
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; CHECK: @test_simplify7
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%conv = uitofp i8 %x to double
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%ret = call double @exp2(double %conv)
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; CHECK: call double @ldexp
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ret double %ret
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}
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define float @test_simplify8(i8 zeroext %x) {
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; CHECK: @test_simplify8
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%conv = uitofp i8 %x to float
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%ret = call float @exp2f(float %conv)
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; CHECK: call float @ldexpf
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ret float %ret
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}
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