269 lines
14 KiB
LLVM
269 lines
14 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 2
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; RUN: opt -passes='default<O0>,mergefunc' -S -mergefunc-preserve-debug-info < %s | FileCheck %s --check-prefix=OPTIMIZATION_LEVEL_0
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; RUN: opt -passes='default<O2>,mergefunc' -S -mergefunc-preserve-debug-info < %s | FileCheck %s --check-prefix=OPTIMIZATION_LEVEL_2
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; Preserve debug info in thunks under -passes=mergefunc -mergefunc-preserve-debug-info
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;
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; We test that:
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; At -O0 we have preserved the generated @llvm.dbg.declare debug intrinsics.
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; At -O2 we have preserved the generated @llvm.dbg.value debug intrinsics.
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; At -O0, stores from the incoming parameters to locations on the stack-frame
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; and allocas that create these locations on the stack-frame are preserved.
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; Debug info got generated for the call made by the thunk and for its return value.
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; The foregoing is the only content of a thunk's entry block.
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; A thunk makes a tail call to the shared implementation.
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; A thunk's call site is preserved to point to the thunk (with only -passes=mergefunc the
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; call site is modified to point to the shared implementation) when both occur
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; within the same translation unit.
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; The source code that was used to test and generate this LLVM IR is:
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;
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; int maxA(int x, int y) {
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; int i, m, j;
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; if (x > y)
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; m = x;
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; else
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; m = y;
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; return m;
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; }
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;
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; int maxB(int x, int y) {
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; int i, m, j;
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; if (x > y)
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; m = x;
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; else
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; m = y;
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; return m;
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; }
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;
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; void f(void) {
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;
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; maxA(3, 4);
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; maxB(1, 9);
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; }
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; Function Attrs: nounwind uwtable
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define i32 @maxA(i32 %x, i32 %y) !dbg !6 {
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; OPTIMIZATION_LEVEL_0-LABEL: define i32 @maxA
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; OPTIMIZATION_LEVEL_0-SAME: (i32 [[X:%.*]], i32 [[Y:%.*]]) !dbg [[DBG6:![0-9]+]] {
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; OPTIMIZATION_LEVEL_0-NEXT: entry:
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; OPTIMIZATION_LEVEL_0-NEXT: [[X_ADDR:%.*]] = alloca i32, align 4
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; OPTIMIZATION_LEVEL_0-NEXT: [[Y_ADDR:%.*]] = alloca i32, align 4
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; OPTIMIZATION_LEVEL_0-NEXT: [[I:%.*]] = alloca i32, align 4
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; OPTIMIZATION_LEVEL_0-NEXT: [[M:%.*]] = alloca i32, align 4
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; OPTIMIZATION_LEVEL_0-NEXT: [[J:%.*]] = alloca i32, align 4
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; OPTIMIZATION_LEVEL_0-NEXT: store i32 [[X]], ptr [[X_ADDR]], align 4
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; OPTIMIZATION_LEVEL_0-NEXT: call void @llvm.dbg.declare(metadata ptr [[X_ADDR]], metadata [[META11:![0-9]+]], metadata !DIExpression()), !dbg [[DBG12:![0-9]+]]
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; OPTIMIZATION_LEVEL_0-NEXT: store i32 [[Y]], ptr [[Y_ADDR]], align 4
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; OPTIMIZATION_LEVEL_0-NEXT: call void @llvm.dbg.declare(metadata ptr [[Y_ADDR]], metadata [[META13:![0-9]+]], metadata !DIExpression()), !dbg [[DBG14:![0-9]+]]
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; OPTIMIZATION_LEVEL_0-NEXT: call void @llvm.dbg.declare(metadata ptr [[I]], metadata [[META15:![0-9]+]], metadata !DIExpression()), !dbg [[DBG16:![0-9]+]]
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; OPTIMIZATION_LEVEL_0-NEXT: call void @llvm.dbg.declare(metadata ptr [[M]], metadata [[META17:![0-9]+]], metadata !DIExpression()), !dbg [[DBG18:![0-9]+]]
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; OPTIMIZATION_LEVEL_0-NEXT: call void @llvm.dbg.declare(metadata ptr [[J]], metadata [[META19:![0-9]+]], metadata !DIExpression()), !dbg [[DBG20:![0-9]+]]
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; OPTIMIZATION_LEVEL_0-NEXT: [[TMP0:%.*]] = load i32, ptr [[X_ADDR]], align 4, !dbg [[DBG21:![0-9]+]]
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; OPTIMIZATION_LEVEL_0-NEXT: [[TMP1:%.*]] = load i32, ptr [[Y_ADDR]], align 4, !dbg [[DBG23:![0-9]+]]
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; OPTIMIZATION_LEVEL_0-NEXT: [[CMP:%.*]] = icmp sgt i32 [[TMP0]], [[TMP1]], !dbg [[DBG24:![0-9]+]]
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; OPTIMIZATION_LEVEL_0-NEXT: br i1 [[CMP]], label [[IF_THEN:%.*]], label [[IF_ELSE:%.*]], !dbg [[DBG25:![0-9]+]]
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; OPTIMIZATION_LEVEL_0: if.then:
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; OPTIMIZATION_LEVEL_0-NEXT: [[TMP2:%.*]] = load i32, ptr [[X_ADDR]], align 4, !dbg [[DBG26:![0-9]+]]
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; OPTIMIZATION_LEVEL_0-NEXT: store i32 [[TMP2]], ptr [[M]], align 4, !dbg [[DBG27:![0-9]+]]
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; OPTIMIZATION_LEVEL_0-NEXT: br label [[IF_END:%.*]], !dbg [[DBG28:![0-9]+]]
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; OPTIMIZATION_LEVEL_0: if.else:
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; OPTIMIZATION_LEVEL_0-NEXT: [[TMP3:%.*]] = load i32, ptr [[Y_ADDR]], align 4, !dbg [[DBG29:![0-9]+]]
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; OPTIMIZATION_LEVEL_0-NEXT: store i32 [[TMP3]], ptr [[M]], align 4, !dbg [[DBG30:![0-9]+]]
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; OPTIMIZATION_LEVEL_0-NEXT: br label [[IF_END]]
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; OPTIMIZATION_LEVEL_0: if.end:
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; OPTIMIZATION_LEVEL_0-NEXT: [[TMP4:%.*]] = load i32, ptr [[M]], align 4, !dbg [[DBG31:![0-9]+]]
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; OPTIMIZATION_LEVEL_0-NEXT: ret i32 [[TMP4]], !dbg [[DBG32:![0-9]+]]
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;
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; OPTIMIZATION_LEVEL_2-LABEL: define i32 @maxA
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; OPTIMIZATION_LEVEL_2-SAME: (i32 [[X:%.*]], i32 [[Y:%.*]]) local_unnamed_addr #[[ATTR0:[0-9]+]] !dbg [[DBG6:![0-9]+]] {
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; OPTIMIZATION_LEVEL_2-NEXT: entry:
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; OPTIMIZATION_LEVEL_2-NEXT: call void @llvm.dbg.value(metadata i32 [[X]], metadata [[META11:![0-9]+]], metadata !DIExpression()), !dbg [[DBG12:![0-9]+]]
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; OPTIMIZATION_LEVEL_2-NEXT: call void @llvm.dbg.value(metadata i32 [[Y]], metadata [[META13:![0-9]+]], metadata !DIExpression()), !dbg [[DBG12]]
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; OPTIMIZATION_LEVEL_2-NEXT: call void @llvm.dbg.declare(metadata ptr undef, metadata [[META14:![0-9]+]], metadata !DIExpression()), !dbg [[DBG15:![0-9]+]]
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; OPTIMIZATION_LEVEL_2-NEXT: call void @llvm.dbg.declare(metadata ptr undef, metadata [[META16:![0-9]+]], metadata !DIExpression()), !dbg [[DBG17:![0-9]+]]
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; OPTIMIZATION_LEVEL_2-NEXT: [[X_Y:%.*]] = tail call i32 @llvm.smax.i32(i32 [[X]], i32 [[Y]])
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; OPTIMIZATION_LEVEL_2-NEXT: call void @llvm.dbg.value(metadata i32 [[X_Y]], metadata [[META18:![0-9]+]], metadata !DIExpression()), !dbg [[DBG12]]
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; OPTIMIZATION_LEVEL_2-NEXT: ret i32 [[X_Y]], !dbg [[DBG19:![0-9]+]]
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;
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entry:
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%x.addr = alloca i32, align 4
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%y.addr = alloca i32, align 4
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%i = alloca i32, align 4
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%m = alloca i32, align 4
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%j = alloca i32, align 4
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store i32 %x, ptr %x.addr, align 4
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call void @llvm.dbg.declare(metadata ptr %x.addr, metadata !11, metadata !12), !dbg !13
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store i32 %y, ptr %y.addr, align 4
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call void @llvm.dbg.declare(metadata ptr %y.addr, metadata !14, metadata !12), !dbg !15
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call void @llvm.dbg.declare(metadata ptr %i, metadata !16, metadata !12), !dbg !17
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call void @llvm.dbg.declare(metadata ptr %m, metadata !18, metadata !12), !dbg !19
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call void @llvm.dbg.declare(metadata ptr %j, metadata !20, metadata !12), !dbg !21
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%0 = load i32, ptr %x.addr, align 4, !dbg !22
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%1 = load i32, ptr %y.addr, align 4, !dbg !24
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%cmp = icmp sgt i32 %0, %1, !dbg !25
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br i1 %cmp, label %if.then, label %if.else, !dbg !26
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if.then: ; preds = %entry
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%2 = load i32, ptr %x.addr, align 4, !dbg !27
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store i32 %2, ptr %m, align 4, !dbg !28
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br label %if.end, !dbg !29
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if.else: ; preds = %entry
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%3 = load i32, ptr %y.addr, align 4, !dbg !30
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store i32 %3, ptr %m, align 4, !dbg !31
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br label %if.end
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if.end: ; preds = %if.else, %if.then
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%4 = load i32, ptr %m, align 4, !dbg !32
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ret i32 %4, !dbg !33
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}
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.declare(metadata, metadata, metadata)
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; Function Attrs: nounwind uwtable
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define i32 @maxB(i32 %x, i32 %y) !dbg !34 {
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; OPTIMIZATION_LEVEL_0-LABEL: define i32 @maxB
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; OPTIMIZATION_LEVEL_0-SAME: (i32 [[X:%.*]], i32 [[Y:%.*]]) !dbg [[DBG33:![0-9]+]] {
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; OPTIMIZATION_LEVEL_0-NEXT: entry:
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; OPTIMIZATION_LEVEL_0-NEXT: [[X_ADDR:%.*]] = alloca i32, align 4
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; OPTIMIZATION_LEVEL_0-NEXT: [[Y_ADDR:%.*]] = alloca i32, align 4
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; OPTIMIZATION_LEVEL_0-NEXT: store i32 [[X]], ptr [[X_ADDR]], align 4
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; OPTIMIZATION_LEVEL_0-NEXT: call void @llvm.dbg.declare(metadata ptr [[X_ADDR]], metadata [[META34:![0-9]+]], metadata !DIExpression()), !dbg [[DBG35:![0-9]+]]
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; OPTIMIZATION_LEVEL_0-NEXT: store i32 [[Y]], ptr [[Y_ADDR]], align 4
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; OPTIMIZATION_LEVEL_0-NEXT: call void @llvm.dbg.declare(metadata ptr [[Y_ADDR]], metadata [[META36:![0-9]+]], metadata !DIExpression()), !dbg [[DBG37:![0-9]+]]
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; OPTIMIZATION_LEVEL_0-NEXT: [[TMP0:%.*]] = tail call i32 @maxA(i32 [[X]], i32 [[Y]]), !dbg [[DBG38:![0-9]+]]
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; OPTIMIZATION_LEVEL_0-NEXT: ret i32 [[TMP0]], !dbg [[DBG38]]
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;
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; OPTIMIZATION_LEVEL_2-LABEL: define i32 @maxB
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; OPTIMIZATION_LEVEL_2-SAME: (i32 [[X:%.*]], i32 [[Y:%.*]]) local_unnamed_addr #[[ATTR0]] !dbg [[DBG20:![0-9]+]] {
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; OPTIMIZATION_LEVEL_2-NEXT: entry:
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; OPTIMIZATION_LEVEL_2-NEXT: call void @llvm.dbg.value(metadata i32 [[X]], metadata [[META21:![0-9]+]], metadata !DIExpression()), !dbg [[DBG22:![0-9]+]]
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; OPTIMIZATION_LEVEL_2-NEXT: call void @llvm.dbg.value(metadata i32 [[Y]], metadata [[META23:![0-9]+]], metadata !DIExpression()), !dbg [[DBG22]]
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; OPTIMIZATION_LEVEL_2-NEXT: [[TMP0:%.*]] = tail call i32 @maxA(i32 [[X]], i32 [[Y]]) #[[ATTR0]], !dbg [[DBG24:![0-9]+]]
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; OPTIMIZATION_LEVEL_2-NEXT: ret i32 [[TMP0]], !dbg [[DBG24]]
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;
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entry:
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%x.addr = alloca i32, align 4
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%y.addr = alloca i32, align 4
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%i = alloca i32, align 4
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%m = alloca i32, align 4
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%j = alloca i32, align 4
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store i32 %x, ptr %x.addr, align 4
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call void @llvm.dbg.declare(metadata ptr %x.addr, metadata !35, metadata !12), !dbg !36
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store i32 %y, ptr %y.addr, align 4
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call void @llvm.dbg.declare(metadata ptr %y.addr, metadata !37, metadata !12), !dbg !38
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call void @llvm.dbg.declare(metadata ptr %i, metadata !39, metadata !12), !dbg !40
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call void @llvm.dbg.declare(metadata ptr %m, metadata !41, metadata !12), !dbg !42
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call void @llvm.dbg.declare(metadata ptr %j, metadata !43, metadata !12), !dbg !44
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%0 = load i32, ptr %x.addr, align 4, !dbg !45
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%1 = load i32, ptr %y.addr, align 4, !dbg !47
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%cmp = icmp sgt i32 %0, %1, !dbg !48
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br i1 %cmp, label %if.then, label %if.else, !dbg !49
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if.then: ; preds = %entry
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%2 = load i32, ptr %x.addr, align 4, !dbg !50
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store i32 %2, ptr %m, align 4, !dbg !51
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br label %if.end, !dbg !52
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if.else: ; preds = %entry
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%3 = load i32, ptr %y.addr, align 4, !dbg !53
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store i32 %3, ptr %m, align 4, !dbg !54
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br label %if.end
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if.end: ; preds = %if.else, %if.then
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%4 = load i32, ptr %m, align 4, !dbg !55
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ret i32 %4, !dbg !56
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}
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; Function Attrs: nounwind uwtable
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define void @f() !dbg !57 {
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; OPTIMIZATION_LEVEL_0-LABEL: define void @f
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; OPTIMIZATION_LEVEL_0-SAME: () !dbg [[DBG39:![0-9]+]] {
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; OPTIMIZATION_LEVEL_0-NEXT: entry:
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; OPTIMIZATION_LEVEL_0-NEXT: [[CALL:%.*]] = call i32 @maxA(i32 3, i32 4), !dbg [[DBG42:![0-9]+]]
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; OPTIMIZATION_LEVEL_0-NEXT: [[CALL1:%.*]] = call i32 @maxB(i32 1, i32 9), !dbg [[DBG43:![0-9]+]]
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; OPTIMIZATION_LEVEL_0-NEXT: ret void, !dbg [[DBG44:![0-9]+]]
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;
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; OPTIMIZATION_LEVEL_2-LABEL: define void @f
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; OPTIMIZATION_LEVEL_2-SAME: () local_unnamed_addr #[[ATTR2:[0-9]+]] !dbg [[DBG25:![0-9]+]] {
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; OPTIMIZATION_LEVEL_2-NEXT: entry:
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; OPTIMIZATION_LEVEL_2-NEXT: ret void, !dbg [[DBG28:![0-9]+]]
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;
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entry:
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%call = call i32 @maxA(i32 3, i32 4), !dbg !60
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%call1 = call i32 @maxB(i32 1, i32 9), !dbg !61
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ret void, !dbg !62
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}
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4}
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!llvm.ident = !{!5}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
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!1 = !DIFile(filename: "mergefunc-preserve-debug-info.c", directory: "")
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!2 = !{}
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!3 = !{i32 2, !"Dwarf Version", i32 4}
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!4 = !{i32 2, !"Debug Info Version", i32 3}
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!5 = !{!""}
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!6 = distinct !DISubprogram(name: "maxA", scope: !7, file: !7, line: 1, type: !8, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2)
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!7 = !DIFile(filename: "./mergefunc-preserve-debug-info.c", directory: "")
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!8 = !DISubroutineType(types: !9)
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!9 = !{!10, !10, !10}
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!10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!11 = !DILocalVariable(name: "x", arg: 1, scope: !6, file: !7, line: 1, type: !10)
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!12 = !DIExpression()
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!13 = !DILocation(line: 1, column: 14, scope: !6)
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!14 = !DILocalVariable(name: "y", arg: 2, scope: !6, file: !7, line: 1, type: !10)
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!15 = !DILocation(line: 1, column: 21, scope: !6)
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!16 = !DILocalVariable(name: "i", scope: !6, file: !7, line: 2, type: !10)
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!17 = !DILocation(line: 2, column: 7, scope: !6)
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!18 = !DILocalVariable(name: "m", scope: !6, file: !7, line: 2, type: !10)
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!19 = !DILocation(line: 2, column: 10, scope: !6)
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!20 = !DILocalVariable(name: "j", scope: !6, file: !7, line: 2, type: !10)
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!21 = !DILocation(line: 2, column: 13, scope: !6)
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!22 = !DILocation(line: 3, column: 7, scope: !23)
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!23 = distinct !DILexicalBlock(scope: !6, file: !7, line: 3, column: 7)
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!24 = !DILocation(line: 3, column: 11, scope: !23)
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!25 = !DILocation(line: 3, column: 9, scope: !23)
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!26 = !DILocation(line: 3, column: 7, scope: !6)
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!27 = !DILocation(line: 4, column: 9, scope: !23)
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!28 = !DILocation(line: 4, column: 7, scope: !23)
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!29 = !DILocation(line: 4, column: 5, scope: !23)
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!30 = !DILocation(line: 6, column: 9, scope: !23)
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!31 = !DILocation(line: 6, column: 7, scope: !23)
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!32 = !DILocation(line: 7, column: 10, scope: !6)
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!33 = !DILocation(line: 7, column: 3, scope: !6)
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!34 = distinct !DISubprogram(name: "maxB", scope: !7, file: !7, line: 10, type: !8, isLocal: false, isDefinition: true, scopeLine: 10, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2)
|
||
|
|
!35 = !DILocalVariable(name: "x", arg: 1, scope: !34, file: !7, line: 10, type: !10)
|
||
|
|
!36 = !DILocation(line: 10, column: 14, scope: !34)
|
||
|
|
!37 = !DILocalVariable(name: "y", arg: 2, scope: !34, file: !7, line: 10, type: !10)
|
||
|
|
!38 = !DILocation(line: 10, column: 21, scope: !34)
|
||
|
|
!39 = !DILocalVariable(name: "i", scope: !34, file: !7, line: 11, type: !10)
|
||
|
|
!40 = !DILocation(line: 11, column: 7, scope: !34)
|
||
|
|
!41 = !DILocalVariable(name: "m", scope: !34, file: !7, line: 11, type: !10)
|
||
|
|
!42 = !DILocation(line: 11, column: 10, scope: !34)
|
||
|
|
!43 = !DILocalVariable(name: "j", scope: !34, file: !7, line: 11, type: !10)
|
||
|
|
!44 = !DILocation(line: 11, column: 13, scope: !34)
|
||
|
|
!45 = !DILocation(line: 12, column: 7, scope: !46)
|
||
|
|
!46 = distinct !DILexicalBlock(scope: !34, file: !7, line: 12, column: 7)
|
||
|
|
!47 = !DILocation(line: 12, column: 11, scope: !46)
|
||
|
|
!48 = !DILocation(line: 12, column: 9, scope: !46)
|
||
|
|
!49 = !DILocation(line: 12, column: 7, scope: !34)
|
||
|
|
!50 = !DILocation(line: 13, column: 9, scope: !46)
|
||
|
|
!51 = !DILocation(line: 13, column: 7, scope: !46)
|
||
|
|
!52 = !DILocation(line: 13, column: 5, scope: !46)
|
||
|
|
!53 = !DILocation(line: 15, column: 9, scope: !46)
|
||
|
|
!54 = !DILocation(line: 15, column: 7, scope: !46)
|
||
|
|
!55 = !DILocation(line: 16, column: 10, scope: !34)
|
||
|
|
!56 = !DILocation(line: 16, column: 3, scope: !34)
|
||
|
|
!57 = distinct !DISubprogram(name: "f", scope: !7, file: !7, line: 19, type: !58, isLocal: false, isDefinition: true, scopeLine: 19, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2)
|
||
|
|
!58 = !DISubroutineType(types: !59)
|
||
|
|
!59 = !{null}
|
||
|
|
!60 = !DILocation(line: 21, column: 3, scope: !57)
|
||
|
|
!61 = !DILocation(line: 22, column: 3, scope: !57)
|
||
|
|
!62 = !DILocation(line: 23, column: 1, scope: !57)
|