forked from OSchip/llvm-project
42 lines
1.6 KiB
LLVM
42 lines
1.6 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc -mtriple=x86_64-pc-linux < %s | FileCheck %s
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;
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; Check that x86's peephole optimization doesn't fold a 64-bit load (movsd) into
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; addpd.
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; rdar://problem/18236850
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%struct.S1 = type { double, double }
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@g = common global %struct.S1 zeroinitializer, align 8
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declare void @foo3(%struct.S1*)
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define void @foo1(double %a.coerce0, double %a.coerce1, double %b.coerce0, double %b.coerce1) nounwind {
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; CHECK-LABEL: foo1:
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; CHECK: # %bb.0:
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; CHECK-NEXT: subq $24, %rsp
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; CHECK-NEXT: movq %rsp, %rdi
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; CHECK-NEXT: callq foo3
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; CHECK-NEXT: movsd {{.*#+}} xmm0 = mem[0],zero
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; CHECK-NEXT: movapd {{.*#+}} xmm1 = <1.0E+0,u>
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; CHECK-NEXT: movhpd {{.*#+}} xmm1 = xmm1[0],mem[0]
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; CHECK-NEXT: addpd %xmm0, %xmm1
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; CHECK-NEXT: movapd %xmm1, {{.*}}(%rip)
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; CHECK-NEXT: addq $24, %rsp
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; CHECK-NEXT: retq
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%1 = alloca <2 x double>, align 16
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%tmpcast = bitcast <2 x double>* %1 to %struct.S1*
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call void @foo3(%struct.S1* %tmpcast) #2
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%p2 = getelementptr inbounds %struct.S1, %struct.S1* %tmpcast, i64 0, i32 0
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%2 = load double, double* %p2, align 16
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%p3 = getelementptr inbounds %struct.S1, %struct.S1* %tmpcast, i64 0, i32 1
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%3 = load double, double* %p3, align 8
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%4 = insertelement <2 x double> undef, double %2, i32 0
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%5 = insertelement <2 x double> %4, double 0.000000e+00, i32 1
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%6 = insertelement <2 x double> undef, double %3, i32 1
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%7 = insertelement <2 x double> %6, double 1.000000e+00, i32 0
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%8 = fadd <2 x double> %5, %7
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store <2 x double> %8, <2 x double>* bitcast (%struct.S1* @g to <2 x double>*), align 16
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ret void
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}
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