[llvm] ac1b6d4 - [InstCombine] Precommit a test
Kazu Hirata via llvm-commits
llvm-commits at lists.llvm.org
Sat Apr 15 14:34:47 PDT 2023
Author: Kazu Hirata
Date: 2023-04-15T14:34:40-07:00
New Revision: ac1b6d46f834239d2a0ea866bd900ce8b9895239
URL: https://github.com/llvm/llvm-project/commit/ac1b6d46f834239d2a0ea866bd900ce8b9895239
DIFF: https://github.com/llvm/llvm-project/commit/ac1b6d46f834239d2a0ea866bd900ce8b9895239.diff
LOG: [InstCombine] Precommit a test
This patch precommits a test for:
https://github.com/llvm/llvm-project/issues/61650
Added:
llvm/test/Transforms/InstCombine/trunc-shl-zext.ll
Modified:
Removed:
################################################################################
diff --git a/llvm/test/Transforms/InstCombine/trunc-shl-zext.ll b/llvm/test/Transforms/InstCombine/trunc-shl-zext.ll
new file mode 100644
index 000000000000..2e7b6d8c8f8c
--- /dev/null
+++ b/llvm/test/Transforms/InstCombine/trunc-shl-zext.ll
@@ -0,0 +1,30 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 2
+; RUN: opt < %s -passes=instcombine -S | FileCheck %s
+
+define i32 @trunc_shl_zext_32(i32 %a) {
+; CHECK-LABEL: define i32 @trunc_shl_zext_32
+; CHECK-SAME: (i32 [[A:%.*]]) {
+; CHECK-NEXT: [[TRUNC:%.*]] = trunc i32 [[A]] to i16
+; CHECK-NEXT: [[SHL:%.*]] = shl i16 [[TRUNC]], 4
+; CHECK-NEXT: [[EXT:%.*]] = zext i16 [[SHL]] to i32
+; CHECK-NEXT: ret i32 [[EXT]]
+;
+ %trunc = trunc i32 %a to i16
+ %shl = shl i16 %trunc, 4
+ %ext = zext i16 %shl to i32
+ ret i32 %ext
+}
+
+define i64 @trunc_shl_zext_64(i64 %a) {
+; CHECK-LABEL: define i64 @trunc_shl_zext_64
+; CHECK-SAME: (i64 [[A:%.*]]) {
+; CHECK-NEXT: [[TRUNC:%.*]] = trunc i64 [[A]] to i8
+; CHECK-NEXT: [[SHL:%.*]] = shl i8 [[TRUNC]], 7
+; CHECK-NEXT: [[EXT:%.*]] = zext i8 [[SHL]] to i64
+; CHECK-NEXT: ret i64 [[EXT]]
+;
+ %trunc = trunc i64 %a to i8
+ %shl = shl i8 %trunc, 7
+ %ext = zext i8 %shl to i64
+ ret i64 %ext
+}
More information about the llvm-commits
mailing list