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1435aa5fdc
Conservatively returns zero when the GV does not specify an alignment nor is it initialized. Previously it returns ABI alignment for type of the GV. However, if the type is a "packed" type, then the under-specified alignments is attached to the load / store instructions. In that case, the alignment of the type cannot be trusted. rdar://10464621 llvm-svn: 145300
47 lines
2.1 KiB
LLVM
47 lines
2.1 KiB
LLVM
; RUN: llc %s -o - -march=x86-64 -mtriple=x86_64-unknown-linux-gnu | FileCheck %s
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; PR4891
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; PR5626
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; This load should be before the call, not after.
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; CHECK: movaps compl+128(%rip), %xmm0
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; CHECK: movaps %xmm0, (%rsp)
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; CHECK: callq killcommon
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@compl = linkonce global [20 x i64] zeroinitializer, align 64 ; <[20 x i64]*> [#uses=1]
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declare void @killcommon(i32* noalias)
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define void @reset(<2 x float>* noalias %garbage1) {
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"file complex.c, line 27, bb1":
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%changed = alloca i32, align 4 ; <i32*> [#uses=3]
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br label %"file complex.c, line 27, bb13"
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"file complex.c, line 27, bb13": ; preds = %"file complex.c, line 27, bb1"
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store i32 0, i32* %changed, align 4
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%r2 = getelementptr float* bitcast ([20 x i64]* @compl to float*), i64 32 ; <float*> [#uses=1]
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%r3 = bitcast float* %r2 to <2 x float>* ; <<2 x float>*> [#uses=1]
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%r4 = load <2 x float>* %r3, align 4 ; <<2 x float>> [#uses=1]
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call void @killcommon(i32* %changed)
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br label %"file complex.c, line 34, bb4"
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"file complex.c, line 34, bb4": ; preds = %"file complex.c, line 27, bb13"
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%r5 = load i32* %changed, align 4 ; <i32> [#uses=1]
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%r6 = icmp eq i32 %r5, 0 ; <i1> [#uses=1]
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%r7 = zext i1 %r6 to i32 ; <i32> [#uses=1]
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%r8 = icmp ne i32 %r7, 0 ; <i1> [#uses=1]
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br i1 %r8, label %"file complex.c, line 34, bb7", label %"file complex.c, line 27, bb5"
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"file complex.c, line 27, bb5": ; preds = %"file complex.c, line 34, bb4"
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br label %"file complex.c, line 35, bb6"
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"file complex.c, line 35, bb6": ; preds = %"file complex.c, line 27, bb5"
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%r11 = ptrtoint <2 x float>* %garbage1 to i64 ; <i64> [#uses=1]
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%r12 = inttoptr i64 %r11 to <2 x float>* ; <<2 x float>*> [#uses=1]
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store <2 x float> %r4, <2 x float>* %r12, align 4
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br label %"file complex.c, line 34, bb7"
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"file complex.c, line 34, bb7": ; preds = %"file complex.c, line 35, bb6", %"file complex.c, line 34, bb4"
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ret void
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}
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