54 lines
1.9 KiB
LLVM
54 lines
1.9 KiB
LLVM
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; RUN: opt -loop-unswitch -enable-new-pm=0 %s -S | FileCheck %s
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; When hoisting simple values out from a loop, and not being able to unswitch
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; the loop due to the invoke instruction, the pass would return an incorrect
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; Modified status. This was caught by the pass return status check that is
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; hidden under EXPENSIVE_CHECKS.
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; CHECK-LABEL: for.cond:
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; CHECK-NEXT: %0 = call i32 @llvm.objectsize.i32.p0i8(i8* bitcast (%struct.anon* @b to i8*), i1 false, i1 false, i1 false)
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; CHECK-NEXT: %1 = icmp uge i32 %0, 1
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; CHECK-NEXT: br label %for.inc
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%struct.anon = type { i16 }
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@b = global %struct.anon zeroinitializer, align 1
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; Function Attrs: nounwind
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define i32 @c() #0 personality i32 (...)* @__CxxFrameHandler3 {
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entry:
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br label %for.cond
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for.cond: ; preds = %cont, %entry
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br label %for.inc
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for.inc: ; preds = %for.cond
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%0 = call i32 @llvm.objectsize.i32.p0i8(i8* bitcast (%struct.anon* @b to i8*), i1 false, i1 false, i1 false)
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%1 = icmp uge i32 %0, 1
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br i1 %1, label %delete.notnull, label %delete.notnull
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delete.notnull: ; preds = %for.inc
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invoke void @g() to label %invoke.cont unwind label %lpad
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invoke.cont: ; preds = %delete.notnull
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br label %for.inc
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lpad: ; preds = %delete.notnull
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%cp = cleanuppad within none []
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cleanupret from %cp unwind to caller
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cont: ; preds = %for.inc
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%2 = load i16, i16* getelementptr inbounds (%struct.anon, %struct.anon* @b, i32 0, i32 0), align 1
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br label %for.cond
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}
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; Function Attrs: nounwind readnone speculatable willreturn
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declare i32 @llvm.objectsize.i32.p0i8(i8*, i1 immarg, i1 immarg, i1 immarg) #1
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declare void @g()
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declare i32 @__CxxFrameHandler3(...)
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attributes #0 = { nounwind }
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attributes #1 = { nounwind readnone speculatable willreturn }
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