[llvm] fd83b86 - [InstCombine] Thwart complexity-based canonicalization in test (NFC)
Nikita Popov via llvm-commits
llvm-commits at lists.llvm.org
Tue Aug 20 07:09:59 PDT 2024
Author: Nikita Popov
Date: 2024-08-20T16:09:43+02:00
New Revision: fd83b86bf6da6486d447d67f2c8204aa1a94dfd6
URL: https://github.com/llvm/llvm-project/commit/fd83b86bf6da6486d447d67f2c8204aa1a94dfd6
DIFF: https://github.com/llvm/llvm-project/commit/fd83b86bf6da6486d447d67f2c8204aa1a94dfd6.diff
LOG: [InstCombine] Thwart complexity-based canonicalization in test (NFC)
Added:
Modified:
llvm/test/Transforms/InstCombine/bit-checks.ll
Removed:
################################################################################
diff --git a/llvm/test/Transforms/InstCombine/bit-checks.ll b/llvm/test/Transforms/InstCombine/bit-checks.ll
index aea8d3465268a9..c7e1fbb8945493 100644
--- a/llvm/test/Transforms/InstCombine/bit-checks.ll
+++ b/llvm/test/Transforms/InstCombine/bit-checks.ll
@@ -806,14 +806,18 @@ define i32 @main7a_logical(i32 %argc, i32 %argc2, i32 %argc3) {
}
; B == (A & B) & D == (A & D)
-define i32 @main7b(i32 %argc, i32 %argc2, i32 %argc3) {
+define i32 @main7b(i32 %argc, i32 %argc2, i32 %argc3x) {
; CHECK-LABEL: @main7b(
-; CHECK-NEXT: [[TMP1:%.*]] = or i32 [[ARGC2:%.*]], [[ARGC3:%.*]]
-; CHECK-NEXT: [[TMP2:%.*]] = and i32 [[TMP1]], [[ARGC:%.*]]
-; CHECK-NEXT: [[AND_COND:%.*]] = icmp ne i32 [[TMP2]], [[TMP1]]
-; CHECK-NEXT: [[STOREMERGE:%.*]] = zext i1 [[AND_COND]] to i32
+; CHECK-NEXT: [[ARGC3:%.*]] = mul i32 [[ARGC3X:%.*]], 42
+; CHECK-NEXT: [[AND1:%.*]] = and i32 [[ARGC:%.*]], [[ARGC2:%.*]]
+; CHECK-NEXT: [[TOBOOL:%.*]] = icmp ne i32 [[AND1]], [[ARGC2]]
+; CHECK-NEXT: [[AND2:%.*]] = and i32 [[ARGC3]], [[ARGC]]
+; CHECK-NEXT: [[TOBOOL3:%.*]] = icmp ne i32 [[ARGC3]], [[AND2]]
+; CHECK-NEXT: [[AND_COND_NOT:%.*]] = or i1 [[TOBOOL]], [[TOBOOL3]]
+; CHECK-NEXT: [[STOREMERGE:%.*]] = zext i1 [[AND_COND_NOT]] to i32
; CHECK-NEXT: ret i32 [[STOREMERGE]]
;
+ %argc3 = mul i32 %argc3x, 42 ; thwart complexity-based canonicalization
%and1 = and i32 %argc, %argc2
%tobool = icmp eq i32 %argc2, %and1
%and2 = and i32 %argc, %argc3
@@ -843,14 +847,18 @@ define i32 @main7b_logical(i32 %argc, i32 %argc2, i32 %argc3) {
}
; B == (B & A) & D == (D & A)
-define i32 @main7c(i32 %argc, i32 %argc2, i32 %argc3) {
+define i32 @main7c(i32 %argc, i32 %argc2, i32 %argc3x) {
; CHECK-LABEL: @main7c(
-; CHECK-NEXT: [[TMP1:%.*]] = or i32 [[ARGC2:%.*]], [[ARGC3:%.*]]
-; CHECK-NEXT: [[TMP2:%.*]] = and i32 [[TMP1]], [[ARGC:%.*]]
-; CHECK-NEXT: [[AND_COND:%.*]] = icmp ne i32 [[TMP2]], [[TMP1]]
-; CHECK-NEXT: [[STOREMERGE:%.*]] = zext i1 [[AND_COND]] to i32
+; CHECK-NEXT: [[ARGC3:%.*]] = mul i32 [[ARGC3X:%.*]], 42
+; CHECK-NEXT: [[AND1:%.*]] = and i32 [[ARGC2:%.*]], [[ARGC:%.*]]
+; CHECK-NEXT: [[TOBOOL:%.*]] = icmp ne i32 [[AND1]], [[ARGC2]]
+; CHECK-NEXT: [[AND2:%.*]] = and i32 [[ARGC3]], [[ARGC]]
+; CHECK-NEXT: [[TOBOOL3:%.*]] = icmp ne i32 [[ARGC3]], [[AND2]]
+; CHECK-NEXT: [[AND_COND_NOT:%.*]] = or i1 [[TOBOOL]], [[TOBOOL3]]
+; CHECK-NEXT: [[STOREMERGE:%.*]] = zext i1 [[AND_COND_NOT]] to i32
; CHECK-NEXT: ret i32 [[STOREMERGE]]
;
+ %argc3 = mul i32 %argc3x, 42 ; thwart complexity-based canonicalization
%and1 = and i32 %argc2, %argc
%tobool = icmp eq i32 %argc2, %and1
%and2 = and i32 %argc3, %argc
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