; RUN: llc -march=hexagon < %s
; REQUIRES: asserts
; This code causes multiple endloop instructions to be generated for the
; same loop. The findLoopInstr would encounter for one endloop would encounter
; the other endloop, and return null in response. This resulted in a crash.
;
; Check that with the fix we are able to compile this code successfully.
target triple = "hexagon"
; Function Attrs: norecurse
define void @fred() local_unnamed_addr #0 align 2 {
b0:
br label %b7
b1: ; preds = %b9
br i1 undef, label %b4, label %b2
b2: ; preds = %b1
%v3 = sub i32 undef, undef
br label %b4
b4: ; preds = %b2, %b1
%v5 = phi i32 [ undef, %b1 ], [ %v3, %b2 ]
br i1 undef, label %b14, label %b6
b6: ; preds = %b4
br label %b10
b7: ; preds = %b0
br i1 undef, label %b9, label %b8
b8: ; preds = %b7
unreachable
b9: ; preds = %b7
br label %b1
b10: ; preds = %b21, %b6
%v11 = phi i32 [ %v22, %b21 ], [ %v5, %b6 ]
br i1 undef, label %b21, label %b12
b12: ; preds = %b10
br label %b15
b13: ; preds = %b21
br label %b14
b14: ; preds = %b13, %b4
ret void
b15: ; preds = %b12
br i1 undef, label %b16, label %b17
b16: ; preds = %b15
store i32 0, ptr undef, align 4
br label %b21
b17: ; preds = %b15
br label %b18
b18: ; preds = %b17
br i1 undef, label %b19, label %b20
b19: ; preds = %b18
br label %b21
b20: ; preds = %b18
store i32 0, ptr undef, align 4
br label %b21
b21: ; preds = %b20, %b19, %b16, %b10
%v22 = add i32 %v11, -8
%v23 = icmp eq i32 %v22, 0
br i1 %v23, label %b13, label %b10
}
attributes #0 = { norecurse "target-cpu"="hexagonv60" "target-features"="-hvx,-long-calls" }
Codebase Browser
llvm