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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 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145300 91177308-0d34-0410-b5e6-96231b3b80d8
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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