42 lines
1.1 KiB
LLVM
42 lines
1.1 KiB
LLVM
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; RUN: llc < %s -mtriple=thumbv6-apple-darwin | FileCheck %s
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; RUN: llc < %s -mtriple=thumbv6-apple-darwin -regalloc=basic | FileCheck %s
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; rdar://8819685
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@__bar = external hidden global i8*
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@__baz = external hidden global i8*
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define i8* @_foo() {
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entry:
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; CHECK: foo:
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%size = alloca i32, align 4
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%0 = load i8** @__bar, align 4
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%1 = icmp eq i8* %0, null
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br i1 %1, label %bb1, label %bb3
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; CHECK: bne
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bb1:
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store i32 1026, i32* %size, align 4
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%2 = alloca [1026 x i8], align 1
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; CHECK: mov [[R0:r[0-9]+]], sp
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; CHECK: adds {{r[0-9]+}}, [[R0]], {{r[0-9]+}}
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%3 = getelementptr inbounds [1026 x i8]* %2, i32 0, i32 0
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%4 = call i32 @_called_func(i8* %3, i32* %size) nounwind
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%5 = icmp eq i32 %4, 0
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br i1 %5, label %bb2, label %bb3
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bb2:
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%6 = call i8* @strdup(i8* %3) nounwind
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store i8* %6, i8** @__baz, align 4
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br label %bb3
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bb3:
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%.0 = phi i8* [ %0, %entry ], [ %6, %bb2 ], [ %3, %bb1 ]
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; CHECK: subs r4, #5
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; CHECK-NEXT: mov sp, r4
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; CHECK-NEXT: pop {r4, r5, r6, r7, pc}
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ret i8* %.0
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}
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declare noalias i8* @strdup(i8* nocapture) nounwind
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declare i32 @_called_func(i8*, i32*) nounwind
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