fd340a4047
This teaches tryToFoldExtOfLoad to set the right location on a newly-created extload. With that in place, the logic for performing a certain ([s|z]ext (load ...)) combine becomes identical for sexts and zexts, and we can get rid of one copy of the logic. The test case churn is due to dependencies on IROrders inherited from the wrong SDLoc. Part of: llvm.org/PR37262 Differential Revision: https://reviews.llvm.org/D46158 llvm-svn: 332118
62 lines
3.3 KiB
LLVM
62 lines
3.3 KiB
LLVM
; RUN: llc < %s -mtriple=x86_64-- | grep movslq | count 1
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; RUN: llc < %s -O0 -mtriple=x86_64-unknown-unknown -mcpu=x86-64 -stop-after livedebugvalues -o - | FileCheck %s -check-prefix=MIR
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; PR4050
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%0 = type { i64 }
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%struct.S1 = type { i16, i32 }
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@g_10 = external global %struct.S1
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declare void @func_28(i64, i64)
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define void @int322(i32 %foo) !dbg !5 {
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entry:
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%val = load i64, i64* getelementptr (%0, %0* bitcast (%struct.S1* @g_10 to %0*), i32 0, i32 0), !dbg !16
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%0 = load i32, i32* getelementptr inbounds (%struct.S1, %struct.S1* @g_10, i32 0, i32 1), align 4, !dbg !17
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; MIR: renamable $rax = MOVSX64rm32 {{.*}}, @g_10 + 4,{{.*}} debug-location !17 :: (dereferenceable load 4 from `i64* getelementptr (%0, %0* bitcast (%struct.S1* @g_10 to %0*), i32 0, i32 0)` + 4)
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%1 = sext i32 %0 to i64, !dbg !18
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%tmp4.i = lshr i64 %val, 32, !dbg !19
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%tmp5.i = trunc i64 %tmp4.i to i32, !dbg !20
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%2 = sext i32 %tmp5.i to i64, !dbg !21
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tail call void @func_28(i64 %2, i64 %1) #0, !dbg !22
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call void @llvm.dbg.value(metadata i64 %val, metadata !8, metadata !DIExpression()), !dbg !16
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call void @llvm.dbg.value(metadata i32 %0, metadata !10, metadata !DIExpression()), !dbg !17
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call void @llvm.dbg.value(metadata i64 %1, metadata !12, metadata !DIExpression()), !dbg !18
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call void @llvm.dbg.value(metadata i64 %tmp4.i, metadata !13, metadata !DIExpression()), !dbg !19
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call void @llvm.dbg.value(metadata i32 %tmp5.i, metadata !14, metadata !DIExpression()), !dbg !20
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call void @llvm.dbg.value(metadata i64 %2, metadata !15, metadata !DIExpression()), !dbg !21
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ret void, !dbg !23
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}
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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.debugify = !{!3, !4}
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!0 = distinct !DICompileUnit(language: DW_LANG_C, file: !1, producer: "debugify", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
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!1 = !DIFile(filename: "/Users/vsk/src/llvm.org-master/llvm/test/CodeGen/X86/fold-sext-trunc.ll", directory: "/")
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!2 = !{}
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!3 = !{i32 8}
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!4 = !{i32 6}
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!5 = distinct !DISubprogram(name: "int322", linkageName: "int322", scope: null, file: !1, line: 1, type: !6, isLocal: false, isDefinition: true, scopeLine: 1, isOptimized: true, unit: !0, retainedNodes: !7)
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!6 = !DISubroutineType(types: !2)
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!7 = !{!8, !10, !12, !13, !14, !15}
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!8 = !DILocalVariable(name: "1", scope: !5, file: !1, line: 1, type: !9)
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!9 = !DIBasicType(name: "ty64", size: 64, encoding: DW_ATE_unsigned)
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!10 = !DILocalVariable(name: "2", scope: !5, file: !1, line: 2, type: !11)
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!11 = !DIBasicType(name: "ty32", size: 32, encoding: DW_ATE_unsigned)
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!12 = !DILocalVariable(name: "3", scope: !5, file: !1, line: 3, type: !9)
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!13 = !DILocalVariable(name: "4", scope: !5, file: !1, line: 4, type: !9)
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!14 = !DILocalVariable(name: "5", scope: !5, file: !1, line: 5, type: !11)
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!15 = !DILocalVariable(name: "6", scope: !5, file: !1, line: 6, type: !9)
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!16 = !DILocation(line: 1, column: 1, scope: !5)
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!17 = !DILocation(line: 2, column: 1, scope: !5)
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!18 = !DILocation(line: 3, column: 1, scope: !5)
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!19 = !DILocation(line: 4, column: 1, scope: !5)
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!20 = !DILocation(line: 5, column: 1, scope: !5)
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!21 = !DILocation(line: 6, column: 1, scope: !5)
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!22 = !DILocation(line: 7, column: 1, scope: !5)
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!23 = !DILocation(line: 8, column: 1, scope: !5)
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!24 = !{i32 2, !"Debug Info Version", i32 3}
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!llvm.module.flags = !{!24}
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