71 lines
3.2 KiB
LLVM
71 lines
3.2 KiB
LLVM
; RUN: llc -mtriple=x86_64-unknown-unknown -mcpu=x86-64 -stop-after=x86-optimize-LEAs < %s | FileCheck %s
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; The LEA optimization pass used to crash on this testcase.
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; This test case used to trigger:
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;
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; assert(MRI->use_empty(LastVReg) &&
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; "The LEA's def register must have no uses");
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; CHECK: LEA64r
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; CHECK-NOT: LEA64r
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; CHECK: DBG_VALUE_LIST
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target triple = "x86_64-unknown-linux-gnu"
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%t10 = type { i8*, [32 x i8] }
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define void @foo() {
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bb_entry:
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%tmp11 = alloca [0 x [0 x i32]], i32 0, align 4
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%i = alloca %t10, align 8
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%i1 = alloca %t10, align 8
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%tmp1.sub = getelementptr inbounds [0 x [0 x i32]], [0 x [0 x i32]]* %tmp11, i64 0, i64 0, i64 0
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%i2 = bitcast [0 x [0 x i32]]* %tmp11 to i8*
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br label %bb_8
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bb_8: ; preds = %bb_last, %bb_entry
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br i1 undef, label %bb_last, label %bb_mid
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bb_mid: ; preds = %bb_8
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%i3 = bitcast %t10* %i1 to i8*
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%i4 = getelementptr inbounds %t10, %t10* %i1, i64 0, i32 1, i64 32
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%i5 = bitcast %t10* %i to i8*
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%i6 = getelementptr inbounds %t10, %t10* %i, i64 0, i32 1, i64 32
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call void @llvm.lifetime.start.p0i8(i64 0, i8* nonnull %i3)
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%v21 = call i64 @llvm.ctlz.i64(i64 undef, i1 false)
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* noundef nonnull dereferenceable(16) null, i8* noundef nonnull align 8 dereferenceable(16) %i4, i64 16, i1 false)
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call void @llvm.dbg.value(metadata !DIArgList(i8* %i4, i8* %i4), metadata !4, metadata !DIExpression(DW_OP_LLVM_arg, 0)), !dbg !9
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call void @llvm.lifetime.end.p0i8(i64 0, i8* nonnull %i3)
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call void @llvm.lifetime.start.p0i8(i64 0, i8* nonnull %i5)
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* noundef nonnull dereferenceable(16) null, i8* noundef nonnull align 8 dereferenceable(16) %i6, i64 16, i1 false)
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call void @llvm.lifetime.end.p0i8(i64 0, i8* nonnull %i5)
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br label %bb_last
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bb_last: ; preds = %bb_mid, %bb_8
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call void @llvm.lifetime.start.p0i8(i64 0, i8* nonnull %i2)
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call void undef(i32* null, i32* null, i32* null, i32 0, i32* nonnull %tmp1.sub)
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call void @llvm.lifetime.end.p0i8(i64 0, i8* nonnull %i2)
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br label %bb_8
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}
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declare i64 @llvm.ctlz.i64(i64, i1 immarg)
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declare void @llvm.memcpy.p0i8.p0i8.i64(i8* noalias nocapture writeonly, i8* noalias nocapture readonly, i64, i1 immarg)
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declare void @llvm.lifetime.start.p0i8(i64 immarg, i8* nocapture)
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declare void @llvm.lifetime.end.p0i8(i64 immarg, i8* nocapture)
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declare void @llvm.dbg.value(metadata, metadata, metadata)
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!2}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, isOptimized: false, runtimeVersion: 0, emissionKind: NoDebug)
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!1 = !DIFile(filename: "n", directory: "/proc/self/cwd", checksumkind: CSK_MD5, checksum: "e588179fedd8fcdfada963f2434cb950")
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!2 = !{i32 2, !"Debug Info Version", i32 3}
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!3 = !{!"function_entry_count", i64 2423}
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!4 = !DILocalVariable(name: "r", scope: !5, file: !6, line: 93)
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!5 = distinct !DISubprogram(name: "c", scope: !7, file: !6, line: 92, spFlags: DISPFlagDefinition, unit: !0)
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!6 = !DIFile(filename: "a", directory: "/proc/self/cwd")
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!7 = !DINamespace(name: "u", scope: !8)
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!8 = !DINamespace(name: "s", scope: null)
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!9 = !DILocation(line: 0, scope: !5)
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