forked from llvm/llvm-project
-
Notifications
You must be signed in to change notification settings - Fork 0
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
[WebAssembly] Select BUILD_VECTOR with large unsigned lane values (ll…
…vm#85880) Previously we expected lane constants to be in the range of signed values for each lane size, but the included test case produced large unsigned values that fall outside that range. Allow instruction selection to proceed in this case rather than failing. Fixes llvm#63817.
- Loading branch information
Showing
2 changed files
with
19 additions
and
2 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,15 @@ | ||
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py | ||
; RUN: llc < %s -mtriple=wasm32 -mattr=+simd128 | FileCheck %s | ||
|
||
;; Regression test for a bug in which BUILD_VECTOR nodes with large unsigned | ||
;; lane constants were not properly selected. | ||
define <4 x i8> @test(<4 x i8> %0) { | ||
; CHECK-LABEL: test: | ||
; CHECK: .functype test (v128) -> (v128) | ||
; CHECK-NEXT: # %bb.0: | ||
; CHECK-NEXT: v128.const 255, 17, 255, 255, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 | ||
; CHECK-NEXT: # fallthrough-return | ||
%V1 = or <4 x i8> <i8 255, i8 255, i8 255, i8 255>, %0 | ||
%V2 = insertelement <4 x i8> %V1, i8 17, i32 1 | ||
ret <4 x i8> %V2 | ||
} |