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
|
; RUN: opt -instcombine -S < %s | FileCheck %s
; CHECK-LABEL: test_scalarize_phi
; CHECK: fmul fast float
define void @test_scalarize_phi(i32 * %n, float * %inout) {
entry:
%0 = load volatile float, float * %inout, align 4
%splat.splatinsert = insertelement <4 x float> undef, float %0, i32 0
%splat.splat = shufflevector <4 x float> %splat.splatinsert, <4 x float> undef, <4 x i32> zeroinitializer
%splat.splatinsert1 = insertelement <4 x float> undef, float 3.0, i32 0
br label %for.cond
for.cond:
%x.0 = phi <4 x float> [ %splat.splat, %entry ], [ %mul, %for.body ]
%i.0 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
%1 = load i32, i32 * %n, align 4
%cmp = icmp ne i32 %i.0, %1
br i1 %cmp, label %for.body, label %for.end
for.body:
%2 = extractelement <4 x float> %x.0, i32 1
store volatile float %2, float * %inout, align 4
%mul = fmul fast <4 x float> %x.0, <float 0x4002A3D700000000, float 0x4002A3D700000000, float 0x4002A3D700000000, float 0x4002A3D700000000>
%inc = add nsw i32 %i.0, 1
br label %for.cond
for.end:
ret void
}
; CHECK-LABEL: test_extract_element_fastmath
; CHECK: fadd fast float
define float @test_extract_element_fastmath(<4 x float> %x) #0 {
entry:
%add = fadd fast <4 x float> %x, <float 0x4002A3D700000000, float 0x4002A3D700000000, float 0x4002A3D700000000, float 0x4002A3D700000000>
%0 = extractelement <4 x float> %add, i32 2
ret float %0
}
|
