[llvm] 5b70db8 - [ConstraintElimination] Add tests where unsigned system can be queried.
Florian Hahn via llvm-commits
llvm-commits at lists.llvm.org
Thu Oct 6 14:12:41 PDT 2022
Author: Florian Hahn
Date: 2022-10-06T22:11:51+01:00
New Revision: 5b70db8f0065554d3b0303e7fe7a6c730f0fb108
URL: https://github.com/llvm/llvm-project/commit/5b70db8f0065554d3b0303e7fe7a6c730f0fb108
DIFF: https://github.com/llvm/llvm-project/commit/5b70db8f0065554d3b0303e7fe7a6c730f0fb108.diff
LOG: [ConstraintElimination] Add tests where unsigned system can be queried.
Add tests with a mix of signed and unsigned predicates. In some cases,
the unsigned system can be queried for signed predicates to improve
results.
Added:
llvm/test/Transforms/ConstraintElimination/signed-query-unsigned-system.ll
Modified:
Removed:
################################################################################
diff --git a/llvm/test/Transforms/ConstraintElimination/signed-query-unsigned-system.ll b/llvm/test/Transforms/ConstraintElimination/signed-query-unsigned-system.ll
new file mode 100644
index 0000000000000..a07c7fa9fb4ca
--- /dev/null
+++ b/llvm/test/Transforms/ConstraintElimination/signed-query-unsigned-system.ll
@@ -0,0 +1,144 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: opt -passes=constraint-elimination -S %s | FileCheck %s
+
+declare void @llvm.assume(i1)
+
+define i1 @sge_0_unsigned_a_ne_0(i8 %a) {
+; CHECK-LABEL: @sge_0_unsigned_a_ne_0(
+; CHECK-NEXT: [[A_NE_0:%.*]] = icmp ne i8 [[A:%.*]], 0
+; CHECK-NEXT: call void @llvm.assume(i1 [[A_NE_0]])
+; CHECK-NEXT: [[EXT:%.*]] = zext i8 [[A]] to i16
+; CHECK-NEXT: [[T:%.*]] = icmp sge i16 [[EXT]], 0
+; CHECK-NEXT: ret i1 [[T]]
+;
+ %a.ne.0 = icmp ne i8 %a, 0
+ call void @llvm.assume(i1 %a.ne.0)
+ %ext = zext i8 %a to i16
+ %t = icmp sge i16 %ext, 0
+ ret i1 %t
+}
+
+define i1 @sgt_0_unsigned_a_ne_0(i8 %a) {
+; CHECK-LABEL: @sgt_0_unsigned_a_ne_0(
+; CHECK-NEXT: [[A_NE_0:%.*]] = icmp ne i8 [[A:%.*]], 0
+; CHECK-NEXT: call void @llvm.assume(i1 [[A_NE_0]])
+; CHECK-NEXT: [[EXT:%.*]] = zext i8 [[A]] to i16
+; CHECK-NEXT: [[T:%.*]] = icmp sgt i16 [[EXT]], 0
+; CHECK-NEXT: ret i1 [[T]]
+;
+ %a.ne.0 = icmp ne i8 %a, 0
+ call void @llvm.assume(i1 %a.ne.0)
+ %ext = zext i8 %a to i16
+ %t = icmp sgt i16 %ext, 0
+ ret i1 %t
+}
+
+define i1 @sgt_0_unsigned_a_sgt_0(i8 %a) {
+; CHECK-LABEL: @sgt_0_unsigned_a_sgt_0(
+; CHECK-NEXT: [[A_SGT_0:%.*]] = icmp sgt i8 [[A:%.*]], 0
+; CHECK-NEXT: call void @llvm.assume(i1 [[A_SGT_0]])
+; CHECK-NEXT: [[EXT:%.*]] = zext i8 [[A]] to i16
+; CHECK-NEXT: [[T:%.*]] = icmp sgt i16 [[EXT]], 0
+; CHECK-NEXT: ret i1 [[T]]
+;
+ %a.sgt.0 = icmp sgt i8 %a, 0
+ call void @llvm.assume(i1 %a.sgt.0)
+ %ext = zext i8 %a to i16
+ %t = icmp sgt i16 %ext, 0
+ ret i1 %t
+}
+
+define i1 @sge_0_unsigned_a_sge_0(i8 %a) {
+; CHECK-LABEL: @sge_0_unsigned_a_sge_0(
+; CHECK-NEXT: [[A_SGE_0:%.*]] = icmp sge i8 [[A:%.*]], 0
+; CHECK-NEXT: call void @llvm.assume(i1 [[A_SGE_0]])
+; CHECK-NEXT: [[EXT:%.*]] = zext i8 [[A]] to i16
+; CHECK-NEXT: [[T:%.*]] = icmp sge i16 [[EXT]], 0
+; CHECK-NEXT: ret i1 [[T]]
+;
+ %a.sge.0 = icmp sge i8 %a, 0
+ call void @llvm.assume(i1 %a.sge.0)
+ %ext = zext i8 %a to i16
+ %t = icmp sge i16 %ext, 0
+ ret i1 %t
+}
+
+define i1 @sgt_0_unsigned_a_ugt_0(i8 %a) {
+; CHECK-LABEL: @sgt_0_unsigned_a_ugt_0(
+; CHECK-NEXT: [[A_UGT_0:%.*]] = icmp ugt i8 [[A:%.*]], 0
+; CHECK-NEXT: call void @llvm.assume(i1 [[A_UGT_0]])
+; CHECK-NEXT: [[EXT:%.*]] = zext i8 [[A]] to i16
+; CHECK-NEXT: [[T:%.*]] = icmp sgt i16 [[EXT]], 0
+; CHECK-NEXT: ret i1 [[T]]
+;
+ %a.ugt.0 = icmp ugt i8 %a, 0
+ call void @llvm.assume(i1 %a.ugt.0)
+ %ext = zext i8 %a to i16
+ %t = icmp sgt i16 %ext, 0
+ ret i1 %t
+}
+
+define i1 @sgt_1_unsigned_a_ne_0(i8 %a) {
+; CHECK-LABEL: @sgt_1_unsigned_a_ne_0(
+; CHECK-NEXT: [[A_NE_0:%.*]] = icmp ne i8 [[A:%.*]], 0
+; CHECK-NEXT: call void @llvm.assume(i1 [[A_NE_0]])
+; CHECK-NEXT: [[EXT:%.*]] = zext i8 [[A]] to i16
+; CHECK-NEXT: [[CMP:%.*]] = icmp sgt i16 [[EXT]], 1
+; CHECK-NEXT: ret i1 [[CMP]]
+;
+ %a.ne.0 = icmp ne i8 %a, 0
+ call void @llvm.assume(i1 %a.ne.0)
+ %ext = zext i8 %a to i16
+ %cmp = icmp sgt i16 %ext, 1
+ ret i1 %cmp
+}
+
+define i1 @sgt_1_unsigned_a_ugt_1(i8 %a) {
+; CHECK-LABEL: @sgt_1_unsigned_a_ugt_1(
+; CHECK-NEXT: [[A_UGT_1:%.*]] = icmp ugt i8 [[A:%.*]], 1
+; CHECK-NEXT: call void @llvm.assume(i1 [[A_UGT_1]])
+; CHECK-NEXT: [[EXT:%.*]] = zext i8 [[A]] to i16
+; CHECK-NEXT: [[T:%.*]] = icmp sgt i16 [[EXT]], 1
+; CHECK-NEXT: ret i1 [[T]]
+;
+ %a.ugt.1 = icmp ugt i8 %a, 1
+ call void @llvm.assume(i1 %a.ugt.1)
+ %ext = zext i8 %a to i16
+ %t = icmp sgt i16 %ext, 1
+ ret i1 %t
+}
+
+define i1 @sge_no_const_unsigned_uge(i8 %a, i16 %b) {
+; CHECK-LABEL: @sge_no_const_unsigned_uge(
+; CHECK-NEXT: [[EXT:%.*]] = zext i8 [[A:%.*]] to i16
+; CHECK-NEXT: [[A_UGE_B:%.*]] = icmp uge i16 [[EXT]], [[B:%.*]]
+; CHECK-NEXT: call void @llvm.assume(i1 [[A_UGE_B]])
+; CHECK-NEXT: [[B_POS:%.*]] = icmp sge i16 [[B]], 0
+; CHECK-NEXT: call void @llvm.assume(i1 [[B_POS]])
+; CHECK-NEXT: [[CMP:%.*]] = icmp sge i16 [[EXT]], [[B]]
+; CHECK-NEXT: ret i1 [[CMP]]
+;
+ %ext = zext i8 %a to i16
+ %a.uge.b = icmp uge i16 %ext, %b
+ call void @llvm.assume(i1 %a.uge.b)
+
+ %b.pos = icmp sge i16 %b, 0
+ call void @llvm.assume(i1 %b.pos)
+ %cmp = icmp sge i16 %ext, %b
+ ret i1 %cmp
+}
+
+define i1 @sgt_0_unsigned_a_ugt_neg_10(i8 %a) {
+; CHECK-LABEL: @sgt_0_unsigned_a_ugt_neg_10(
+; CHECK-NEXT: [[A_UGT_0:%.*]] = icmp ugt i8 [[A:%.*]], 10
+; CHECK-NEXT: call void @llvm.assume(i1 [[A_UGT_0]])
+; CHECK-NEXT: [[EXT:%.*]] = zext i8 [[A]] to i16
+; CHECK-NEXT: [[T:%.*]] = icmp sgt i16 [[EXT]], 0
+; CHECK-NEXT: ret i1 [[T]]
+;
+ %a.ugt.0 = icmp ugt i8 %a, 10
+ call void @llvm.assume(i1 %a.ugt.0)
+ %ext = zext i8 %a to i16
+ %cmp = icmp sgt i16 %ext, 0
+ ret i1 %cmp
+}
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