[llvm] 66d2add - [CVP] Add tests for condition constraint at use (NFC)
Nikita Popov via llvm-commits
llvm-commits at lists.llvm.org
Wed Jan 11 04:00:11 PST 2023
Author: Nikita Popov
Date: 2023-01-11T13:00:00+01:00
New Revision: 66d2add0c70201490ca1716ea171d8dc87471954
URL: https://github.com/llvm/llvm-project/commit/66d2add0c70201490ca1716ea171d8dc87471954
DIFF: https://github.com/llvm/llvm-project/commit/66d2add0c70201490ca1716ea171d8dc87471954.diff
LOG: [CVP] Add tests for condition constraint at use (NFC)
Added:
llvm/test/Transforms/CorrelatedValuePropagation/cond-at-use.ll
Modified:
Removed:
################################################################################
diff --git a/llvm/test/Transforms/CorrelatedValuePropagation/cond-at-use.ll b/llvm/test/Transforms/CorrelatedValuePropagation/cond-at-use.ll
new file mode 100644
index 0000000000000..370f41f6b95c2
--- /dev/null
+++ b/llvm/test/Transforms/CorrelatedValuePropagation/cond-at-use.ll
@@ -0,0 +1,293 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: opt -S -passes=correlated-propagation < %s | FileCheck %s
+
+declare void @use.i16(i16)
+declare i16 @llvm.usub.sat.i16(i16, i16)
+declare {i16, i1} @llvm.usub.with.overflow.i16(i16, i16)
+
+define i16 @sel_true_cond(i16 %x) {
+; CHECK-LABEL: @sel_true_cond(
+; CHECK-NEXT: [[SUB:%.*]] = call i16 @llvm.usub.sat.i16(i16 [[X:%.*]], i16 10)
+; CHECK-NEXT: [[CMP:%.*]] = icmp uge i16 [[X]], 10
+; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i16 [[SUB]], i16 42
+; CHECK-NEXT: ret i16 [[SEL]]
+;
+ %sub = call i16 @llvm.usub.sat.i16(i16 %x, i16 10)
+ %cmp = icmp uge i16 %x, 10
+ %sel = select i1 %cmp, i16 %sub, i16 42
+ ret i16 %sel
+}
+
+define i16 @sel_true_cond_insufficient(i16 %x) {
+; CHECK-LABEL: @sel_true_cond_insufficient(
+; CHECK-NEXT: [[SUB:%.*]] = call i16 @llvm.usub.sat.i16(i16 [[X:%.*]], i16 10)
+; CHECK-NEXT: [[CMP:%.*]] = icmp uge i16 [[X]], 9
+; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i16 [[SUB]], i16 42
+; CHECK-NEXT: ret i16 [[SEL]]
+;
+ %sub = call i16 @llvm.usub.sat.i16(i16 %x, i16 10)
+ %cmp = icmp uge i16 %x, 9
+ %sel = select i1 %cmp, i16 %sub, i16 42
+ ret i16 %sel
+}
+
+define i16 @sel_true_cond_wrong_swap(i16 %x) {
+; CHECK-LABEL: @sel_true_cond_wrong_swap(
+; CHECK-NEXT: [[SUB:%.*]] = call i16 @llvm.usub.sat.i16(i16 [[X:%.*]], i16 10)
+; CHECK-NEXT: [[CMP:%.*]] = icmp uge i16 [[X]], 10
+; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i16 42, i16 [[SUB]]
+; CHECK-NEXT: ret i16 [[SEL]]
+;
+ %sub = call i16 @llvm.usub.sat.i16(i16 %x, i16 10)
+ %cmp = icmp uge i16 %x, 10
+ %sel = select i1 %cmp, i16 42, i16 %sub
+ ret i16 %sel
+}
+
+define i16 @sel_true_cond_wrong_op(i16 %x, i16 %y) {
+; CHECK-LABEL: @sel_true_cond_wrong_op(
+; CHECK-NEXT: [[SUB:%.*]] = call i16 @llvm.usub.sat.i16(i16 [[X:%.*]], i16 10)
+; CHECK-NEXT: [[CMP:%.*]] = icmp uge i16 [[Y:%.*]], 10
+; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i16 [[SUB]], i16 42
+; CHECK-NEXT: ret i16 [[SEL]]
+;
+ %sub = call i16 @llvm.usub.sat.i16(i16 %x, i16 10)
+ %cmp = icmp uge i16 %y, 10
+ %sel = select i1 %cmp, i16 %sub, i16 42
+ ret i16 %sel
+}
+
+define i16 @sel_true_cond_extra_use(i16 %x) {
+; CHECK-LABEL: @sel_true_cond_extra_use(
+; CHECK-NEXT: [[SUB:%.*]] = call i16 @llvm.usub.sat.i16(i16 [[X:%.*]], i16 10)
+; CHECK-NEXT: call void @use.i16(i16 [[SUB]])
+; CHECK-NEXT: [[CMP:%.*]] = icmp uge i16 [[X]], 10
+; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i16 [[SUB]], i16 42
+; CHECK-NEXT: ret i16 [[SEL]]
+;
+ %sub = call i16 @llvm.usub.sat.i16(i16 %x, i16 10)
+ call void @use.i16(i16 %sub)
+ %cmp = icmp uge i16 %x, 10
+ %sel = select i1 %cmp, i16 %sub, i16 42
+ ret i16 %sel
+}
+
+define i16 @sel_true_cond_longer_chain(i16 %x) {
+; CHECK-LABEL: @sel_true_cond_longer_chain(
+; CHECK-NEXT: [[SUB:%.*]] = call i16 @llvm.usub.sat.i16(i16 [[X:%.*]], i16 10)
+; CHECK-NEXT: [[EXTRA:%.*]] = mul i16 [[SUB]], 3
+; CHECK-NEXT: [[CMP:%.*]] = icmp uge i16 [[X]], 10
+; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i16 [[EXTRA]], i16 42
+; CHECK-NEXT: ret i16 [[SEL]]
+;
+ %sub = call i16 @llvm.usub.sat.i16(i16 %x, i16 10)
+ %extra = mul i16 %sub, 3
+ %cmp = icmp uge i16 %x, 10
+ %sel = select i1 %cmp, i16 %extra, i16 42
+ ret i16 %sel
+}
+
+define i16 @sel_false_cond(i16 %x) {
+; CHECK-LABEL: @sel_false_cond(
+; CHECK-NEXT: [[SUB:%.*]] = call i16 @llvm.usub.sat.i16(i16 [[X:%.*]], i16 10)
+; CHECK-NEXT: [[CMP:%.*]] = icmp ult i16 [[X]], 10
+; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i16 42, i16 [[SUB]]
+; CHECK-NEXT: ret i16 [[SEL]]
+;
+ %sub = call i16 @llvm.usub.sat.i16(i16 %x, i16 10)
+ %cmp = icmp ult i16 %x, 10
+ %sel = select i1 %cmp, i16 42, i16 %sub
+ ret i16 %sel
+}
+
+define i16 @sel_false_cond_insufficient(i16 %x) {
+; CHECK-LABEL: @sel_false_cond_insufficient(
+; CHECK-NEXT: [[SUB:%.*]] = call i16 @llvm.usub.sat.i16(i16 [[X:%.*]], i16 10)
+; CHECK-NEXT: [[CMP:%.*]] = icmp ult i16 [[X]], 9
+; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i16 42, i16 [[SUB]]
+; CHECK-NEXT: ret i16 [[SEL]]
+;
+ %sub = call i16 @llvm.usub.sat.i16(i16 %x, i16 10)
+ %cmp = icmp ult i16 %x, 9
+ %sel = select i1 %cmp, i16 42, i16 %sub
+ ret i16 %sel
+}
+
+define i16 @phi_true_cond(i16 %x) {
+; CHECK-LABEL: @phi_true_cond(
+; CHECK-NEXT: entry:
+; CHECK-NEXT: [[SUB:%.*]] = call i16 @llvm.usub.sat.i16(i16 [[X:%.*]], i16 10)
+; CHECK-NEXT: [[CMP:%.*]] = icmp uge i16 [[X]], 10
+; CHECK-NEXT: br i1 [[CMP]], label [[JOIN:%.*]], label [[SPLIT:%.*]]
+; CHECK: split:
+; CHECK-NEXT: br label [[JOIN]]
+; CHECK: join:
+; CHECK-NEXT: [[PHI:%.*]] = phi i16 [ [[SUB]], [[ENTRY:%.*]] ], [ 42, [[SPLIT]] ]
+; CHECK-NEXT: ret i16 [[PHI]]
+;
+entry:
+ %sub = call i16 @llvm.usub.sat.i16(i16 %x, i16 10)
+ %cmp = icmp uge i16 %x, 10
+ br i1 %cmp, label %join, label %split
+
+split:
+ br label %join
+
+join:
+ %phi = phi i16 [ %sub, %entry ], [ 42, %split ]
+ ret i16 %phi
+}
+
+define i16 @phi_true_cond_insufficient(i16 %x) {
+; CHECK-LABEL: @phi_true_cond_insufficient(
+; CHECK-NEXT: entry:
+; CHECK-NEXT: [[SUB:%.*]] = call i16 @llvm.usub.sat.i16(i16 [[X:%.*]], i16 10)
+; CHECK-NEXT: [[CMP:%.*]] = icmp uge i16 [[X]], 9
+; CHECK-NEXT: br i1 [[CMP]], label [[JOIN:%.*]], label [[SPLIT:%.*]]
+; CHECK: split:
+; CHECK-NEXT: br label [[JOIN]]
+; CHECK: join:
+; CHECK-NEXT: [[PHI:%.*]] = phi i16 [ [[SUB]], [[ENTRY:%.*]] ], [ 42, [[SPLIT]] ]
+; CHECK-NEXT: ret i16 [[PHI]]
+;
+entry:
+ %sub = call i16 @llvm.usub.sat.i16(i16 %x, i16 10)
+ %cmp = icmp uge i16 %x, 9
+ br i1 %cmp, label %join, label %split
+
+split:
+ br label %join
+
+join:
+ %phi = phi i16 [ %sub, %entry ], [ 42, %split ]
+ ret i16 %phi
+}
+
+define i16 @phi_true_cond_non_local(i16 %x) {
+; CHECK-LABEL: @phi_true_cond_non_local(
+; CHECK-NEXT: entry:
+; CHECK-NEXT: [[SUB:%.*]] = call i16 @llvm.usub.sat.i16(i16 [[X:%.*]], i16 10)
+; CHECK-NEXT: [[CMP:%.*]] = icmp uge i16 [[X]], 10
+; CHECK-NEXT: br i1 [[CMP]], label [[SPLIT:%.*]], label [[JOIN:%.*]]
+; CHECK: split:
+; CHECK-NEXT: br label [[JOIN]]
+; CHECK: join:
+; CHECK-NEXT: [[PHI:%.*]] = phi i16 [ [[SUB]], [[SPLIT]] ], [ 42, [[ENTRY:%.*]] ]
+; CHECK-NEXT: ret i16 [[PHI]]
+;
+entry:
+ %sub = call i16 @llvm.usub.sat.i16(i16 %x, i16 10)
+ %cmp = icmp uge i16 %x, 10
+ br i1 %cmp, label %split, label %join
+
+split:
+ br label %join
+
+join:
+ %phi = phi i16 [ %sub, %split ], [ 42, %entry ]
+ ret i16 %phi
+}
+
+define i16 @phi_false_cond(i16 %x) {
+; CHECK-LABEL: @phi_false_cond(
+; CHECK-NEXT: entry:
+; CHECK-NEXT: [[SUB:%.*]] = call i16 @llvm.usub.sat.i16(i16 [[X:%.*]], i16 10)
+; CHECK-NEXT: [[CMP:%.*]] = icmp ult i16 [[X]], 10
+; CHECK-NEXT: br i1 [[CMP]], label [[SPLIT:%.*]], label [[JOIN:%.*]]
+; CHECK: split:
+; CHECK-NEXT: br label [[JOIN]]
+; CHECK: join:
+; CHECK-NEXT: [[PHI:%.*]] = phi i16 [ [[SUB]], [[ENTRY:%.*]] ], [ 42, [[SPLIT]] ]
+; CHECK-NEXT: ret i16 [[PHI]]
+;
+entry:
+ %sub = call i16 @llvm.usub.sat.i16(i16 %x, i16 10)
+ %cmp = icmp ult i16 %x, 10
+ br i1 %cmp, label %split, label %join
+
+split:
+ br label %join
+
+join:
+ %phi = phi i16 [ %sub, %entry ], [ 42, %split ]
+ ret i16 %phi
+}
+
+define i16 @phi_false_cond_insufficient(i16 %x) {
+; CHECK-LABEL: @phi_false_cond_insufficient(
+; CHECK-NEXT: entry:
+; CHECK-NEXT: [[SUB:%.*]] = call i16 @llvm.usub.sat.i16(i16 [[X:%.*]], i16 10)
+; CHECK-NEXT: [[CMP:%.*]] = icmp ult i16 [[X]], 9
+; CHECK-NEXT: br i1 [[CMP]], label [[SPLIT:%.*]], label [[JOIN:%.*]]
+; CHECK: split:
+; CHECK-NEXT: br label [[JOIN]]
+; CHECK: join:
+; CHECK-NEXT: [[PHI:%.*]] = phi i16 [ [[SUB]], [[ENTRY:%.*]] ], [ 42, [[SPLIT]] ]
+; CHECK-NEXT: ret i16 [[PHI]]
+;
+entry:
+ %sub = call i16 @llvm.usub.sat.i16(i16 %x, i16 10)
+ %cmp = icmp ult i16 %x, 9
+ br i1 %cmp, label %split, label %join
+
+split:
+ br label %join
+
+join:
+ %phi = phi i16 [ %sub, %entry ], [ 42, %split ]
+ ret i16 %phi
+}
+
+define i16 @phi_false_cond_non_local(i16 %x) {
+; CHECK-LABEL: @phi_false_cond_non_local(
+; CHECK-NEXT: entry:
+; CHECK-NEXT: [[SUB:%.*]] = call i16 @llvm.usub.sat.i16(i16 [[X:%.*]], i16 10)
+; CHECK-NEXT: [[CMP:%.*]] = icmp ult i16 [[X]], 10
+; CHECK-NEXT: br i1 [[CMP]], label [[JOIN:%.*]], label [[SPLIT:%.*]]
+; CHECK: split:
+; CHECK-NEXT: br label [[JOIN]]
+; CHECK: join:
+; CHECK-NEXT: [[PHI:%.*]] = phi i16 [ [[SUB]], [[SPLIT]] ], [ 42, [[ENTRY:%.*]] ]
+; CHECK-NEXT: ret i16 [[PHI]]
+;
+entry:
+ %sub = call i16 @llvm.usub.sat.i16(i16 %x, i16 10)
+ %cmp = icmp ult i16 %x, 10
+ br i1 %cmp, label %join, label %split
+
+split:
+ br label %join
+
+join:
+ %phi = phi i16 [ %sub, %split ], [ 42, %entry ]
+ ret i16 %phi
+}
+
+define i16 @loop_cond() {
+; CHECK-LABEL: @loop_cond(
+; CHECK-NEXT: entry:
+; CHECK-NEXT: br label [[LOOP:%.*]]
+; CHECK: loop:
+; CHECK-NEXT: [[IV:%.*]] = phi i16 [ 1000, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ]
+; CHECK-NEXT: [[COUNT:%.*]] = phi i16 [ 0, [[ENTRY]] ], [ [[COUNT_NEXT:%.*]], [[LOOP]] ]
+; CHECK-NEXT: [[CMP:%.*]] = icmp eq i16 [[IV]], 0
+; CHECK-NEXT: [[IV_NEXT]] = call i16 @llvm.usub.sat.i16(i16 [[IV]], i16 1)
+; CHECK-NEXT: [[COUNT_NEXT]] = add i16 [[COUNT]], 1
+; CHECK-NEXT: br i1 [[CMP]], label [[EXIT:%.*]], label [[LOOP]]
+; CHECK: exit:
+; CHECK-NEXT: ret i16 [[COUNT]]
+;
+entry:
+ br label %loop
+
+loop:
+ %iv = phi i16 [ 1000, %entry ], [ %iv.next, %loop ]
+ %count = phi i16 [ 0, %entry ], [ %count.next, %loop ]
+ %cmp = icmp eq i16 %iv, 0
+ %iv.next = call i16 @llvm.usub.sat.i16(i16 %iv, i16 1)
+ %count.next = add i16 %count, 1
+ br i1 %cmp, label %exit, label %loop
+
+exit:
+ ret i16 %count
+}
More information about the llvm-commits
mailing list