You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
63 lines
2.1 KiB
63 lines
2.1 KiB
; RUN: opt -march=hexagon -hexagon-loop-idiom -S < %s | FileCheck %s
|
|
;
|
|
; The number of nested selects caused the simplification loop to take
|
|
; more than the maximum number of iterations. This caused the compiler
|
|
; to crash under suspicion of an infinite loop. This (still reduced)
|
|
; testcase shows a legitimate case where this limit was exceeded.
|
|
; Instead of crashing, gracefully abort the simplification.
|
|
;
|
|
; Check for sane output.
|
|
; CHECK: define void @fred
|
|
|
|
target datalayout = "e-m:e-p:32:32:32-a:0-n16:32-i64:64:64-i32:32:32-i16:16:16-i1:8:8-f32:32:32-f64:64:64-v32:32:32-v64:64:64-v512:512:512-v1024:1024:1024-v2048:2048:2048"
|
|
target triple = "hexagon"
|
|
|
|
define void @fred() unnamed_addr #0 {
|
|
b0:
|
|
%v1 = select i1 false, i32 undef, i32 2
|
|
br label %b2
|
|
|
|
b2: ; preds = %b2, %b0
|
|
%v3 = sext i16 undef to i32
|
|
%v4 = add nsw i32 %v1, %v3
|
|
%v5 = select i1 undef, i32 undef, i32 %v4
|
|
%v6 = icmp slt i32 %v5, undef
|
|
%v7 = select i1 %v6, i32 %v5, i32 undef
|
|
%v8 = icmp slt i32 %v7, 0
|
|
%v9 = select i1 %v8, i32 %v7, i32 0
|
|
%v10 = sub i32 undef, undef
|
|
%v11 = add i32 %v10, %v9
|
|
%v12 = sext i16 undef to i32
|
|
%v13 = sext i16 undef to i32
|
|
%v14 = add nsw i32 %v1, %v13
|
|
%v15 = select i1 undef, i32 undef, i32 %v14
|
|
%v16 = icmp slt i32 %v15, undef
|
|
%v17 = select i1 %v16, i32 %v15, i32 undef
|
|
%v18 = select i1 undef, i32 %v17, i32 %v12
|
|
%v19 = add i32 undef, %v18
|
|
%v20 = sext i16 undef to i32
|
|
%v21 = sext i16 0 to i32
|
|
%v22 = add nsw i32 %v1, %v21
|
|
%v23 = sext i16 undef to i32
|
|
%v24 = add nsw i32 %v1, %v23
|
|
%v25 = select i1 undef, i32 undef, i32 %v24
|
|
%v26 = icmp slt i32 %v25, %v22
|
|
%v27 = select i1 %v26, i32 %v25, i32 %v22
|
|
%v28 = icmp slt i32 %v27, %v20
|
|
%v29 = select i1 %v28, i32 %v27, i32 %v20
|
|
%v30 = add i32 undef, %v29
|
|
%v31 = add i32 %v11, undef
|
|
%v32 = add i32 %v31, undef
|
|
%v33 = add i32 %v32, %v19
|
|
%v34 = add i32 %v33, %v30
|
|
%v35 = add nsw i32 %v34, 32768
|
|
%v36 = icmp ult i32 %v35, 65536
|
|
%v37 = select i1 %v36, i32 %v34, i32 undef
|
|
br i1 undef, label %b2, label %b38
|
|
|
|
b38: ; preds = %b2
|
|
unreachable
|
|
}
|
|
|
|
attributes #0 = { "target-cpu"="hexagonv60" }
|