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Add/edit tests to include instruction-level FMF on calls 

Prepatory patch before changing LibCallSimplifier to use the FMF.
Also, tighten the CHECK lines and give the tests more meaningful names.
Similar changes to:
http://reviews.llvm.org/rL257414

llvm-svn: 257481
This commit is contained in:
Sanjay Patel 2016-01-12 16:50:17 +00:00
parent acdff46a9c
commit 71e550fefb
1 changed files with 28 additions and 16 deletions
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44
llvm/test/Transforms/InstCombine/pow-exp.ll
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@ -1,28 +1,40 @@
; RUN: opt < %s -instcombine -S | FileCheck %s
define double @mypow(double %x, double %y) #0 {
entry:
define double @pow_exp(double %x, double %y) #0 {
%call = call fast double @exp(double %x) #0
%pow = call fast double @llvm.pow.f64(double %call, double %y)
ret double %pow
}
; CHECK-LABEL: define double @pow_exp(
; CHECK-NEXT: %mul = fmul fast double %x, %y
; CHECK-NEXT: %exp = call fast double @exp(double %mul)
; CHECK-NEXT: ret double %exp
; FIXME: This should not be transformed because the 'exp' call is not fast.
define double @pow_exp_not_fast(double %x, double %y) #0 {
%call = call double @exp(double %x)
%pow = call double @llvm.pow.f64(double %call, double %y)
%pow = call fast double @llvm.pow.f64(double %call, double %y)
ret double %pow
}
; CHECK-LABEL: define double @mypow(
; CHECK: %mul = fmul fast double %x, %y
; CHECK: %exp = call fast double @exp(double %mul) #0
; CHECK: ret double %exp
; CHECK: }
; CHECK-LABEL: define double @pow_exp_not_fast(
; CHECK-NEXT: %call = call double @exp(double %x)
; CHECK-NEXT: %mul = fmul fast double %x, %y
; CHECK-NEXT: %exp = call fast double @exp(double %mul)
; CHECK-NEXT: ret double %exp
define double @test2(double ()* %fptr, double %p1) #0 {
%call1 = call double %fptr()
%pow = call double @llvm.pow.f64(double %call1, double %p1)
define double @function_pointer(double ()* %fptr, double %p1) #0 {
%call1 = call fast double %fptr()
%pow = call fast double @llvm.pow.f64(double %call1, double %p1)
ret double %pow
}
; CHECK-LABEL: @test2
; CHECK: llvm.pow.f64
; CHECK-LABEL: @function_pointer
; CHECK-NEXT: %call1 = call fast double %fptr()
; CHECK-NEXT: %pow = call fast double @llvm.pow.f64(double %call1, double %p1)
declare double @exp(double) #1
declare double @exp(double)
declare double @llvm.pow.f64(double, double)
attributes #0 = { "unsafe-fp-math"="true" }
attributes #1 = { "unsafe-fp-math"="true" }
attributes #0 = { "unsafe-fp-math"="true" nounwind readnone }