1 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2 ; RUN: llc < %s -mattr=+sse2 | FileCheck %s
5 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"
6 target triple = "i686-apple-darwin9.4.0"
8 %struct.anon = type <{ float, float }>
9 @.str = internal constant [17 x i8] c"pt: %.0f, %.0f\0A\00\00" ; <[17 x i8]*> [#uses=1]
11 ; We can not fold either stack load into an 'xor' instruction because that
12 ; would change what should be a 4-byte load into a 16-byte load.
13 ; We can fold the 16-byte constant load into either 'xor' instruction,
14 ; but we do not. It has more than one use, so it gets loaded into a register.
16 define void @foo(%struct.anon* byval %p) nounwind {
18 ; CHECK: ## %bb.0: ## %entry
19 ; CHECK-NEXT: subl $28, %esp
20 ; CHECK-NEXT: movaps {{.*#+}} xmm0 = [-0.0E+0,-0.0E+0,-0.0E+0,-0.0E+0]
21 ; CHECK-NEXT: movss {{.*#+}} xmm1 = mem[0],zero,zero,zero
22 ; CHECK-NEXT: movss {{.*#+}} xmm2 = mem[0],zero,zero,zero
23 ; CHECK-NEXT: xorps %xmm0, %xmm1
24 ; CHECK-NEXT: cvtss2sd %xmm1, %xmm1
25 ; CHECK-NEXT: xorps %xmm0, %xmm2
26 ; CHECK-NEXT: xorps %xmm0, %xmm0
27 ; CHECK-NEXT: cvtss2sd %xmm2, %xmm0
28 ; CHECK-NEXT: movsd %xmm0, {{[0-9]+}}(%esp)
29 ; CHECK-NEXT: movsd %xmm1, {{[0-9]+}}(%esp)
30 ; CHECK-NEXT: movl $_.str, (%esp)
31 ; CHECK-NEXT: calll _printf
32 ; CHECK-NEXT: addl $28, %esp
35 %tmp = getelementptr %struct.anon, %struct.anon* %p, i32 0, i32 0 ; <float*> [#uses=1]
36 %tmp1 = load float, float* %tmp ; <float> [#uses=1]
37 %tmp2 = getelementptr %struct.anon, %struct.anon* %p, i32 0, i32 1 ; <float*> [#uses=1]
38 %tmp3 = load float, float* %tmp2 ; <float> [#uses=1]
39 %neg = fsub float -0.000000e+00, %tmp1 ; <float> [#uses=1]
40 %conv = fpext float %neg to double ; <double> [#uses=1]
41 %neg4 = fsub float -0.000000e+00, %tmp3 ; <float> [#uses=1]
42 %conv5 = fpext float %neg4 to double ; <double> [#uses=1]
43 %call = call i32 (...) @printf( i8* getelementptr ([17 x i8], [17 x i8]* @.str, i32 0, i32 0), double %conv, double %conv5 ) ; <i32> [#uses=0]
47 declare i32 @printf(...)
49 ; We can not fold the load from the stack into the 'and' instruction because
50 ; that changes an 8-byte load into a 16-byte load (illegal memory access).
51 ; We can fold the load of the constant because it is a 16-byte vector constant.
53 define double @PR22371(double %x) {
54 ; CHECK-LABEL: PR22371:
56 ; CHECK-NEXT: subl $12, %esp
57 ; CHECK-NEXT: .cfi_def_cfa_offset 16
58 ; CHECK-NEXT: movsd {{.*#+}} xmm0 = mem[0],zero
59 ; CHECK-NEXT: andps LCPI1_0, %xmm0
60 ; CHECK-NEXT: movlps %xmm0, (%esp)
61 ; CHECK-NEXT: fldl (%esp)
62 ; CHECK-NEXT: addl $12, %esp
64 %call = tail call double @fabs(double %x) #0
68 declare double @fabs(double) #0
69 attributes #0 = { readnone }