47 lines
1.7 KiB
LLVM
47 lines
1.7 KiB
LLVM
; RUN: opt < %s -O1 -S -enable-non-lto-gmr=true | FileCheck %s
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-apple-macosx10.10.0"
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@a = internal global [3 x i32] zeroinitializer, align 4
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; The important thing we're checking for here is the reload of (some element of)
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; @a after the memset.
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; CHECK-LABEL: @main
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; CHECK: load i32, i32* getelementptr {{.*}} @a
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; CHECK-NEXT: call void @memsetp0i8i64{{.*}} @a
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; CHECK-NEXT: load i32, i32* getelementptr {{.*}} @a
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; CHECK-NEXT: call void @memsetp0i8i64A{{.*}} @a
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; CHECK-NEXT: load i32, i32* getelementptr {{.*}} @a
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; CHECK: icmp eq
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; CHECK: br i1
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define i32 @main() {
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entry:
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%0 = bitcast [3 x i32]* @a to i8*
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%1 = load i32, i32* getelementptr inbounds ([3 x i32], [3 x i32]* @a, i64 0, i64 2), align 4
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call void @memsetp0i8i64(i8* %0, i8 0, i64 4, i32 4, i1 false)
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%2 = load i32, i32* getelementptr inbounds ([3 x i32], [3 x i32]* @a, i64 0, i64 2), align 4
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call void @memsetp0i8i64A(i8* %0, i8 0, i64 4, i32 4, i1 false)
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%3 = load i32, i32* getelementptr inbounds ([3 x i32], [3 x i32]* @a, i64 0, i64 2), align 4
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%4 = add i32 %2, %3
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%cmp1 = icmp eq i32 %1, %4
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br i1 %cmp1, label %if.then, label %if.end
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if.then: ; preds = %entr
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call void @abort() #3
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unreachable
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if.end: ; preds = %entry
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ret i32 0
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}
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; Function Attrs: nounwind argmemonly
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declare void @memsetp0i8i64(i8* nocapture, i8, i64, i32, i1) nounwind argmemonly
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; Function Attrs: nounwind inaccessiblemem_or_argmemonly
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declare void @memsetp0i8i64A(i8* nocapture, i8, i64, i32, i1) nounwind inaccessiblemem_or_argmemonly
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; Function Attrs: noreturn nounwind
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declare void @abort() noreturn nounwind
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