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
|
; RUN: llc -march=hexagon -mcpu=hexagonv5 < %s | FileCheck %s
; Optimize fneg to togglebit in V5.
define float @foo(float %x) nounwind {
entry:
; CHECK: r{{[0-9]+}} = togglebit(r{{[0-9]+}},#31)
%x.addr = alloca float, align 4
store float %x, float* %x.addr, align 4
%0 = load float, float* %x.addr, align 4
%sub = fsub float -0.000000e+00, %0
ret float %sub
}
define float @bar(float %x) nounwind {
entry:
; CHECK: r{{[0-9]+}} = togglebit(r{{[0-9]+}},#31)
%sub = fsub float -0.000000e+00, %x
ret float %sub
}
define float @baz(float %x) nounwind {
entry:
; CHECK: r{{[0-9]+}} = togglebit(r{{[0-9]+}},#31)
%conv1 = fmul float %x, -1.000000e+00
ret float %conv1
}
|
