1 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2 ; RUN: llc -mtriple=x86_64-pc-linux < %s | FileCheck %s
4 ; Check that x86's peephole optimization doesn't fold a 64-bit load (movsd) into
6 ; rdar://problem/18236850
8 %struct.S1 = type { double, double }
10 @g = common global %struct.S1 zeroinitializer, align 8
12 declare void @foo3(%struct.S1*)
14 define void @foo1(double %a.coerce0, double %a.coerce1, double %b.coerce0, double %b.coerce1) nounwind {
17 ; CHECK-NEXT: subq $24, %rsp
18 ; CHECK-NEXT: movq %rsp, %rdi
19 ; CHECK-NEXT: callq foo3
20 ; CHECK-NEXT: movsd {{.*#+}} xmm0 = mem[0],zero
21 ; CHECK-NEXT: movapd {{.*#+}} xmm1 = <1.0E+0,u>
22 ; CHECK-NEXT: movhpd {{.*#+}} xmm1 = xmm1[0],mem[0]
23 ; CHECK-NEXT: addpd %xmm0, %xmm1
24 ; CHECK-NEXT: movapd %xmm1, {{.*}}(%rip)
25 ; CHECK-NEXT: addq $24, %rsp
27 %1 = alloca <2 x double>, align 16
28 %tmpcast = bitcast <2 x double>* %1 to %struct.S1*
29 call void @foo3(%struct.S1* %tmpcast) #2
30 %p2 = getelementptr inbounds %struct.S1, %struct.S1* %tmpcast, i64 0, i32 0
31 %2 = load double, double* %p2, align 16
32 %p3 = getelementptr inbounds %struct.S1, %struct.S1* %tmpcast, i64 0, i32 1
33 %3 = load double, double* %p3, align 8
34 %4 = insertelement <2 x double> undef, double %2, i32 0
35 %5 = insertelement <2 x double> %4, double 0.000000e+00, i32 1
36 %6 = insertelement <2 x double> undef, double %3, i32 1
37 %7 = insertelement <2 x double> %6, double 1.000000e+00, i32 0
38 %8 = fadd <2 x double> %5, %7
39 store <2 x double> %8, <2 x double>* bitcast (%struct.S1* @g to <2 x double>*), align 16