[llvm] 67d4538 - [SimpleLoopUnswitch][NFC] Add tests for and/or conditions of selects
Joshua Cao via llvm-commits
llvm-commits at lists.llvm.org
Wed Jun 14 00:53:37 PDT 2023
Author: Joshua Cao
Date: 2023-06-14T00:42:42-07:00
New Revision: 67d4538a81f89108c23369c7e8385b88185ad0a2
URL: https://github.com/llvm/llvm-project/commit/67d4538a81f89108c23369c7e8385b88185ad0a2
DIFF: https://github.com/llvm/llvm-project/commit/67d4538a81f89108c23369c7e8385b88185ad0a2.diff
LOG: [SimpleLoopUnswitch][NFC] Add tests for and/or conditions of selects
Added:
Modified:
llvm/test/Transforms/SimpleLoopUnswitch/nontrivial-unswitch-select.ll
Removed:
################################################################################
diff --git a/llvm/test/Transforms/SimpleLoopUnswitch/nontrivial-unswitch-select.ll b/llvm/test/Transforms/SimpleLoopUnswitch/nontrivial-unswitch-select.ll
index 90c8899ec8e18..1647d0b6e7b51 100644
--- a/llvm/test/Transforms/SimpleLoopUnswitch/nontrivial-unswitch-select.ll
+++ b/llvm/test/Transforms/SimpleLoopUnswitch/nontrivial-unswitch-select.ll
@@ -818,3 +818,175 @@ for.body: ; preds = %entry, %for.body
%exitcond.not = icmp eq i32 %inc, %n
br i1 %exitcond.not, label %for.cond.cleanup, label %for.body
}
+
+; Test unswitch select when the condition is an AND whose LHS is invariant
+define i32 @and_lhs_invariant(i32 %num, i1 %cond) {
+; CHECK-LABEL: define i32 @and_lhs_invariant
+; CHECK-SAME: (i32 [[NUM:%.*]], i1 [[COND:%.*]]) {
+; CHECK-NEXT: entry:
+; CHECK-NEXT: [[CMP6:%.*]] = icmp sgt i32 [[NUM]], 0
+; CHECK-NEXT: br i1 [[CMP6]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_COND_CLEANUP:%.*]]
+; CHECK: for.body.preheader:
+; CHECK-NEXT: br label [[FOR_BODY:%.*]]
+; CHECK: for.cond.cleanup.loopexit:
+; CHECK-NEXT: br label [[FOR_COND_CLEANUP]]
+; CHECK: for.cond.cleanup:
+; CHECK-NEXT: ret i32 undef
+; CHECK: for.body:
+; CHECK-NEXT: [[I_07:%.*]] = phi i32 [ [[INC:%.*]], [[FOR_BODY]] ], [ 0, [[FOR_BODY_PREHEADER]] ]
+; CHECK-NEXT: [[REM:%.*]] = and i32 [[I_07]], 1
+; CHECK-NEXT: [[CMP1:%.*]] = icmp eq i32 [[REM]], 0
+; CHECK-NEXT: [[TMP0:%.*]] = and i1 [[COND]], [[CMP1]]
+; CHECK-NEXT: [[COND2:%.*]] = select i1 [[TMP0]], i32 [[I_07]], i32 0
+; CHECK-NEXT: tail call void @bar(i32 noundef [[COND2]])
+; CHECK-NEXT: [[INC]] = add nuw nsw i32 [[I_07]], 1
+; CHECK-NEXT: [[EXITCOND_NOT:%.*]] = icmp eq i32 [[INC]], [[NUM]]
+; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label [[FOR_COND_CLEANUP_LOOPEXIT:%.*]], label [[FOR_BODY]]
+;
+entry:
+ %cmp6 = icmp sgt i32 %num, 0
+ br i1 %cmp6, label %for.body, label %for.cond.cleanup
+
+for.cond.cleanup: ; preds = %for.body, %entry
+ ret i32 undef
+
+for.body: ; preds = %entry, %for.body
+ %i.07 = phi i32 [ %inc, %for.body ], [ 0, %entry ]
+ %rem = and i32 %i.07, 1
+ %cmp1 = icmp eq i32 %rem, 0
+ %0 = and i1 %cond, %cmp1
+ %cond2 = select i1 %0, i32 %i.07, i32 0
+ tail call void @bar(i32 noundef %cond2)
+ %inc = add nuw nsw i32 %i.07, 1
+ %exitcond.not = icmp eq i32 %inc, %num
+ br i1 %exitcond.not, label %for.cond.cleanup, label %for.body
+}
+
+; Test unswitch select when the condition is an AND whose RHS is invariant
+define i32 @and_rhs_invariant(i32 %num, i1 %cond) {
+; CHECK-LABEL: define i32 @and_rhs_invariant
+; CHECK-SAME: (i32 [[NUM:%.*]], i1 [[COND:%.*]]) {
+; CHECK-NEXT: entry:
+; CHECK-NEXT: [[CMP6:%.*]] = icmp sgt i32 [[NUM]], 0
+; CHECK-NEXT: br i1 [[CMP6]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_COND_CLEANUP:%.*]]
+; CHECK: for.body.preheader:
+; CHECK-NEXT: br label [[FOR_BODY:%.*]]
+; CHECK: for.cond.cleanup.loopexit:
+; CHECK-NEXT: br label [[FOR_COND_CLEANUP]]
+; CHECK: for.cond.cleanup:
+; CHECK-NEXT: ret i32 undef
+; CHECK: for.body:
+; CHECK-NEXT: [[I_07:%.*]] = phi i32 [ [[INC:%.*]], [[FOR_BODY]] ], [ 0, [[FOR_BODY_PREHEADER]] ]
+; CHECK-NEXT: [[REM:%.*]] = and i32 [[I_07]], 1
+; CHECK-NEXT: [[CMP1:%.*]] = icmp eq i32 [[REM]], 0
+; CHECK-NEXT: [[TMP0:%.*]] = and i1 [[CMP1]], [[COND]]
+; CHECK-NEXT: [[COND2:%.*]] = select i1 [[TMP0]], i32 [[I_07]], i32 0
+; CHECK-NEXT: tail call void @bar(i32 noundef [[COND2]])
+; CHECK-NEXT: [[INC]] = add nuw nsw i32 [[I_07]], 1
+; CHECK-NEXT: [[EXITCOND_NOT:%.*]] = icmp eq i32 [[INC]], [[NUM]]
+; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label [[FOR_COND_CLEANUP_LOOPEXIT:%.*]], label [[FOR_BODY]]
+;
+entry:
+ %cmp6 = icmp sgt i32 %num, 0
+ br i1 %cmp6, label %for.body, label %for.cond.cleanup
+
+for.cond.cleanup: ; preds = %for.body, %entry
+ ret i32 undef
+
+for.body: ; preds = %entry, %for.body
+ %i.07 = phi i32 [ %inc, %for.body ], [ 0, %entry ]
+ %rem = and i32 %i.07, 1
+ %cmp1 = icmp eq i32 %rem, 0
+ %0 = and i1 %cmp1, %cond
+ %cond2 = select i1 %0, i32 %i.07, i32 0
+ tail call void @bar(i32 noundef %cond2)
+ %inc = add nuw nsw i32 %i.07, 1
+ %exitcond.not = icmp eq i32 %inc, %num
+ br i1 %exitcond.not, label %for.cond.cleanup, label %for.body
+}
+
+; Test unswitch select when the condition is an OR whose LHS is invariant
+define i32 @or_lhs_invariant(i32 %num, i1 %cond) {
+; CHECK-LABEL: define i32 @or_lhs_invariant
+; CHECK-SAME: (i32 [[NUM:%.*]], i1 [[COND:%.*]]) {
+; CHECK-NEXT: entry:
+; CHECK-NEXT: [[CMP6:%.*]] = icmp sgt i32 [[NUM]], 0
+; CHECK-NEXT: br i1 [[CMP6]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_COND_CLEANUP:%.*]]
+; CHECK: for.body.preheader:
+; CHECK-NEXT: br label [[FOR_BODY:%.*]]
+; CHECK: for.cond.cleanup.loopexit:
+; CHECK-NEXT: br label [[FOR_COND_CLEANUP]]
+; CHECK: for.cond.cleanup:
+; CHECK-NEXT: ret i32 undef
+; CHECK: for.body:
+; CHECK-NEXT: [[I_07:%.*]] = phi i32 [ [[INC:%.*]], [[FOR_BODY]] ], [ 0, [[FOR_BODY_PREHEADER]] ]
+; CHECK-NEXT: [[REM:%.*]] = and i32 [[I_07]], 1
+; CHECK-NEXT: [[CMP1:%.*]] = icmp eq i32 [[REM]], 0
+; CHECK-NEXT: [[TMP0:%.*]] = or i1 [[COND]], [[CMP1]]
+; CHECK-NEXT: [[COND2:%.*]] = select i1 [[TMP0]], i32 [[I_07]], i32 0
+; CHECK-NEXT: tail call void @bar(i32 noundef [[COND2]])
+; CHECK-NEXT: [[INC]] = add nuw nsw i32 [[I_07]], 1
+; CHECK-NEXT: [[EXITCOND_NOT:%.*]] = icmp eq i32 [[INC]], [[NUM]]
+; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label [[FOR_COND_CLEANUP_LOOPEXIT:%.*]], label [[FOR_BODY]]
+;
+entry:
+ %cmp6 = icmp sgt i32 %num, 0
+ br i1 %cmp6, label %for.body, label %for.cond.cleanup
+
+for.cond.cleanup: ; preds = %for.body, %entry
+ ret i32 undef
+
+for.body: ; preds = %entry, %for.body
+ %i.07 = phi i32 [ %inc, %for.body ], [ 0, %entry ]
+ %rem = and i32 %i.07, 1
+ %cmp1 = icmp eq i32 %rem, 0
+ %0 = or i1 %cond, %cmp1
+ %cond2 = select i1 %0, i32 %i.07, i32 0
+ tail call void @bar(i32 noundef %cond2)
+ %inc = add nuw nsw i32 %i.07, 1
+ %exitcond.not = icmp eq i32 %inc, %num
+ br i1 %exitcond.not, label %for.cond.cleanup, label %for.body
+}
+
+; Test unswitch select when the condition is an OR whose RHS is invariant
+define i32 @or_rhs_invariant(i32 %num, i1 %cond) {
+; CHECK-LABEL: define i32 @or_rhs_invariant
+; CHECK-SAME: (i32 [[NUM:%.*]], i1 [[COND:%.*]]) {
+; CHECK-NEXT: entry:
+; CHECK-NEXT: [[CMP6:%.*]] = icmp sgt i32 [[NUM]], 0
+; CHECK-NEXT: br i1 [[CMP6]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_COND_CLEANUP:%.*]]
+; CHECK: for.body.preheader:
+; CHECK-NEXT: br label [[FOR_BODY:%.*]]
+; CHECK: for.cond.cleanup.loopexit:
+; CHECK-NEXT: br label [[FOR_COND_CLEANUP]]
+; CHECK: for.cond.cleanup:
+; CHECK-NEXT: ret i32 undef
+; CHECK: for.body:
+; CHECK-NEXT: [[I_07:%.*]] = phi i32 [ [[INC:%.*]], [[FOR_BODY]] ], [ 0, [[FOR_BODY_PREHEADER]] ]
+; CHECK-NEXT: [[REM:%.*]] = and i32 [[I_07]], 1
+; CHECK-NEXT: [[CMP1:%.*]] = icmp eq i32 [[REM]], 0
+; CHECK-NEXT: [[TMP0:%.*]] = or i1 [[CMP1]], [[COND]]
+; CHECK-NEXT: [[COND2:%.*]] = select i1 [[TMP0]], i32 [[I_07]], i32 0
+; CHECK-NEXT: tail call void @bar(i32 noundef [[COND2]])
+; CHECK-NEXT: [[INC]] = add nuw nsw i32 [[I_07]], 1
+; CHECK-NEXT: [[EXITCOND_NOT:%.*]] = icmp eq i32 [[INC]], [[NUM]]
+; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label [[FOR_COND_CLEANUP_LOOPEXIT:%.*]], label [[FOR_BODY]]
+;
+entry:
+ %cmp6 = icmp sgt i32 %num, 0
+ br i1 %cmp6, label %for.body, label %for.cond.cleanup
+
+for.cond.cleanup: ; preds = %for.body, %entry
+ ret i32 undef
+
+for.body: ; preds = %entry, %for.body
+ %i.07 = phi i32 [ %inc, %for.body ], [ 0, %entry ]
+ %rem = and i32 %i.07, 1
+ %cmp1 = icmp eq i32 %rem, 0
+ %0 = or i1 %cmp1, %cond
+ %cond2 = select i1 %0, i32 %i.07, i32 0
+ tail call void @bar(i32 noundef %cond2)
+ %inc = add nuw nsw i32 %i.07, 1
+ %exitcond.not = icmp eq i32 %inc, %num
+ br i1 %exitcond.not, label %for.cond.cleanup, label %for.body
+}
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