blob: 7e36eadb4026328cfe5a110e1052a50dbb1ad192 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
|
; RUN: opt < %s -instcombine -S | FileCheck %s
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 fast double @llvm.pow.f64(double %call, double %y)
ret double %pow
}
; 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 @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: @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)
declare double @llvm.pow.f64(double, double)
attributes #0 = { "unsafe-fp-math"="true" nounwind readnone }
|
