derek.holloway
7502bf64a4
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68 lines
2.3 KiB
LLVM
68 lines
2.3 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --function-signature
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; RUN: opt -S -passes=globalopt -o - < %s | FileCheck %s
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; No malloc promotion with non-null check.
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target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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@_ZL3g_i = internal global ptr null, align 8
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@_ZL3g_j = global ptr null, align 8
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@.str = private unnamed_addr constant [2 x i8] c"0\00", align 1
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@.str.1 = private unnamed_addr constant [2 x i8] c"1\00", align 1
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define dso_local i32 @main() {
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; CHECK-LABEL: define {{[^@]+}}@main() local_unnamed_addr {
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; CHECK-NEXT: bb:
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; CHECK-NEXT: store ptr null, ptr @_ZL3g_i, align 8
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; CHECK-NEXT: call fastcc void @_ZL13PutsSomethingv()
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; CHECK-NEXT: ret i32 0
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;
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bb:
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store ptr null, ptr @_ZL3g_i, align 8
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call void @_ZL13PutsSomethingv()
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ret i32 0
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}
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define internal void @_ZL13PutsSomethingv() {
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; CHECK-LABEL: define {{[^@]+}}@_ZL13PutsSomethingv() unnamed_addr {
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; CHECK-NEXT: bb:
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; CHECK-NEXT: [[I:%.*]] = load ptr, ptr @_ZL3g_i, align 8
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; CHECK-NEXT: [[I1:%.*]] = load ptr, ptr @_ZL3g_j, align 8
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; CHECK-NEXT: [[CMP:%.*]] = icmp eq ptr [[I]], [[I1]]
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; CHECK-NEXT: br i1 [[CMP]], label [[BB2:%.*]], label [[BB6:%.*]]
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; CHECK: bb2:
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; CHECK-NEXT: [[I3:%.*]] = call noalias ptr @malloc(i64 4)
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; CHECK-NEXT: store ptr [[I3]], ptr @_ZL3g_i, align 8
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; CHECK-NEXT: [[I5:%.*]] = call i32 @puts(ptr @.str)
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; CHECK-NEXT: br label [[BB8:%.*]]
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; CHECK: bb6:
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; CHECK-NEXT: [[I7:%.*]] = call i32 @puts(ptr @.str.1)
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; CHECK-NEXT: br label [[BB8]]
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; CHECK: bb8:
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; CHECK-NEXT: ret void
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;
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bb:
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%i = load ptr, ptr @_ZL3g_i, align 8
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%i1 = load ptr, ptr @_ZL3g_j, align 8
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%cmp = icmp eq ptr %i, %i1
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br i1 %cmp, label %bb2, label %bb6
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bb2: ; preds = %bb
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%i3 = call noalias ptr @malloc(i64 4)
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store ptr %i3, ptr @_ZL3g_i, align 8
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%i5 = call i32 @puts(ptr @.str)
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br label %bb8
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bb6: ; preds = %bb
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%i7 = call i32 @puts(ptr @.str.1)
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br label %bb8
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bb8: ; preds = %bb6, %bb2
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ret void
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}
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declare dso_local noalias ptr @malloc(i64)
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declare dso_local i32 @puts(ptr nocapture readonly)
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