forked from OSchip/llvm-project
66 lines
2.2 KiB
LLVM
66 lines
2.2 KiB
LLVM
; RUN: opt < %s -O1 -S -enable-non-lto-gmr=true | FileCheck %s
|
|
|
|
target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
|
|
target triple = "x86_64-apple-macosx10.10.0"
|
|
|
|
@a = internal global [3 x i32] zeroinitializer, align 4
|
|
@b = common global i32 0, align 4
|
|
|
|
; The important thing we're checking for here is the reload of (some element of)
|
|
; @a after the memset.
|
|
|
|
; CHECK-LABEL: @main
|
|
; CHECK: call void @llvm.memset.p0i8.i64{{.*}} @a
|
|
; CHECK: store i32 3
|
|
; CHECK: load i32, i32* getelementptr {{.*}} @a
|
|
; CHECK: icmp eq i32
|
|
; CHECK: br i1
|
|
|
|
define i32 @main() {
|
|
entry:
|
|
%retval = alloca i32, align 4
|
|
%c = alloca [1 x i32], align 4
|
|
store i32 0, i32* %retval, align 4
|
|
%0 = bitcast [1 x i32]* %c to i8*
|
|
call void @llvm.memset.p0i8.i64(i8* %0, i8 0, i64 4, i32 4, i1 false)
|
|
store i32 1, i32* getelementptr inbounds ([3 x i32], [3 x i32]* @a, i64 0, i64 2), align 4
|
|
store i32 0, i32* @b, align 4
|
|
br label %for.cond
|
|
|
|
for.cond: ; preds = %for.inc, %entry
|
|
%1 = load i32, i32* @b, align 4
|
|
%cmp = icmp slt i32 %1, 3
|
|
br i1 %cmp, label %for.body, label %for.end
|
|
|
|
for.body: ; preds = %for.cond
|
|
%2 = load i32, i32* @b, align 4
|
|
%idxprom = sext i32 %2 to i64
|
|
%arrayidx = getelementptr inbounds [3 x i32], [3 x i32]* @a, i64 0, i64 %idxprom
|
|
store i32 0, i32* %arrayidx, align 4
|
|
br label %for.inc
|
|
|
|
for.inc: ; preds = %for.body
|
|
%3 = load i32, i32* @b, align 4
|
|
%inc = add nsw i32 %3, 1
|
|
store i32 %inc, i32* @b, align 4
|
|
br label %for.cond
|
|
|
|
for.end: ; preds = %for.cond
|
|
%4 = load i32, i32* getelementptr inbounds ([3 x i32], [3 x i32]* @a, i64 0, i64 2), align 4
|
|
%cmp1 = icmp ne i32 %4, 0
|
|
br i1 %cmp1, label %if.then, label %if.end
|
|
|
|
if.then: ; preds = %for.end
|
|
call void @abort() #3
|
|
unreachable
|
|
|
|
if.end: ; preds = %for.end
|
|
ret i32 0
|
|
}
|
|
|
|
; Function Attrs: nounwind argmemonly
|
|
declare void @llvm.memset.p0i8.i64(i8* nocapture, i8, i64, i32, i1) nounwind argmemonly
|
|
|
|
; Function Attrs: noreturn nounwind
|
|
declare void @abort() noreturn nounwind
|