https://bugs.llvm.org/show_bug.cgi?id=49606
Bug ID: 49606
Summary: opt crashes with "opt -O1 -attributor-enable=cgscc":
Assertion `Header.isValid()' failed.
Product: libraries
Version: trunk
Hardware: PC
OS: All
Status: NEW
Severity: enhancement
Priority: P
Component: Interprocedural Optimizations
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
reduced.ll:
source_filename = "reduced.ll"
target datalayout =
"e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
%0 = type { i32, %1, %2* }
%1 = type { i32 }
%2 = type opaque
define hidden %0* @f1(i64 %0, i64 %1) {
%3 = call { %0*, i64 } @f3(i64 %0)
ret %0* undef
}
define linkonce_odr hidden { %0*, i64 } @f3(i64 %0) align 2 {
%2 = call i32 @f4()
%3 = zext i32 %2 to i64
call void @f5(i64 %3, i64 %0)
ret { %0*, i64 } undef
}
define linkonce_odr hidden i32 @f4() align 2 {
ret i32 16
}
define internal void @f5(i64 %0, i64 %1) {
br label %3
3: ; preds = %6, %2
call void @f6(i64 %0)
%4 = icmp sgt i64 %1, %0
br i1 %4, label %5, label %6
5: ; preds = %3
ret void
6: ; preds = %3
call void @f5(i64 %0, i64 %1)
br label %3
}
define internal void @f6(i64 %0) {
%2 = icmp sgt i64 %0, 0
br i1 %2, label %3, label %4
3: ; preds = %1
call void @llvm.trap()
ret void
4: ; preds = %1
ret void
}
; Function Attrs: cold noreturn nounwind
declare void @llvm.trap() #0
attributes #0 = { cold noreturn nounwind }
The crash shows up on release build with assertion, but not on debug build.
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