8ebb3eac02
The legacy PM is deprecated, so update a bunch of lit tests running opt to use the new PM syntax when specifying the pipeline. In this patch focus has been put on test cases for ConstantMerge, ConstraintElimination, CorrelatedValuePropagation, GlobalDCE, GlobalOpt, SCCP, TailCallElim and PredicateInfo. Differential Revision: https://reviews.llvm.org/D114516
136 lines
4.2 KiB
LLVM
136 lines
4.2 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -passes=correlated-propagation -S | FileCheck %s
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; Check that debug locations are preserved. For more info see:
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; https://llvm.org/docs/SourceLevelDebugging.html#fixing-errors
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; RUN: opt < %s -enable-debugify -passes=correlated-propagation -S 2>&1 | \
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; RUN: FileCheck %s -check-prefix=DEBUG
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; DEBUG: CheckModuleDebugify: PASS
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declare void @use64(i64)
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define void @test1(i32 %n) {
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; CHECK-LABEL: @test1(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[FOR_COND:%.*]]
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; CHECK: for.cond:
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; CHECK-NEXT: [[A:%.*]] = phi i32 [ [[N:%.*]], [[ENTRY:%.*]] ], [ [[EXT:%.*]], [[FOR_BODY:%.*]] ]
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; CHECK-NEXT: [[CMP:%.*]] = icmp sgt i32 [[A]], -1
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; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_END:%.*]]
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; CHECK: for.body:
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; CHECK-NEXT: [[EXT_WIDE1:%.*]] = zext i32 [[A]] to i64
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; CHECK-NEXT: call void @use64(i64 [[EXT_WIDE1]])
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; CHECK-NEXT: [[EXT]] = trunc i64 [[EXT_WIDE1]] to i32
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; CHECK-NEXT: br label [[FOR_COND]]
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; CHECK: for.end:
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; CHECK-NEXT: ret void
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;
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entry:
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br label %for.cond
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for.cond: ; preds = %for.body, %entry
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%a = phi i32 [ %n, %entry ], [ %ext, %for.body ]
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%cmp = icmp sgt i32 %a, -1
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br i1 %cmp, label %for.body, label %for.end
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for.body: ; preds = %for.cond
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%ext.wide = sext i32 %a to i64
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call void @use64(i64 %ext.wide)
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%ext = trunc i64 %ext.wide to i32
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br label %for.cond
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for.end: ; preds = %for.cond
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ret void
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}
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;; Negative test to show transform doesn't happen unless n >= 0.
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define void @test2(i32 %n) {
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; CHECK-LABEL: @test2(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[FOR_COND:%.*]]
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; CHECK: for.cond:
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; CHECK-NEXT: [[A:%.*]] = phi i32 [ [[N:%.*]], [[ENTRY:%.*]] ], [ [[EXT:%.*]], [[FOR_BODY:%.*]] ]
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; CHECK-NEXT: [[CMP:%.*]] = icmp sgt i32 [[A]], -2
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; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_END:%.*]]
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; CHECK: for.body:
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; CHECK-NEXT: [[EXT_WIDE:%.*]] = sext i32 [[A]] to i64
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; CHECK-NEXT: call void @use64(i64 [[EXT_WIDE]])
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; CHECK-NEXT: [[EXT]] = trunc i64 [[EXT_WIDE]] to i32
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; CHECK-NEXT: br label [[FOR_COND]]
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; CHECK: for.end:
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; CHECK-NEXT: ret void
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;
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entry:
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br label %for.cond
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for.cond: ; preds = %for.body, %entry
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%a = phi i32 [ %n, %entry ], [ %ext, %for.body ]
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%cmp = icmp sgt i32 %a, -2
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br i1 %cmp, label %for.body, label %for.end
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for.body: ; preds = %for.cond
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%ext.wide = sext i32 %a to i64
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call void @use64(i64 %ext.wide)
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%ext = trunc i64 %ext.wide to i32
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br label %for.cond
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for.end: ; preds = %for.cond
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ret void
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}
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;; Non looping test case.
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define void @test3(i32 %n) {
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; CHECK-LABEL: @test3(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[CMP:%.*]] = icmp sgt i32 [[N:%.*]], -1
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; CHECK-NEXT: br i1 [[CMP]], label [[BB:%.*]], label [[EXIT:%.*]]
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; CHECK: bb:
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; CHECK-NEXT: [[EXT_WIDE1:%.*]] = zext i32 [[N]] to i64
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; CHECK-NEXT: call void @use64(i64 [[EXT_WIDE1]])
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; CHECK-NEXT: [[EXT:%.*]] = trunc i64 [[EXT_WIDE1]] to i32
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; CHECK-NEXT: br label [[EXIT]]
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; CHECK: exit:
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; CHECK-NEXT: ret void
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;
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entry:
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%cmp = icmp sgt i32 %n, -1
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br i1 %cmp, label %bb, label %exit
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bb:
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%ext.wide = sext i32 %n to i64
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call void @use64(i64 %ext.wide)
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%ext = trunc i64 %ext.wide to i32
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br label %exit
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exit:
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ret void
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}
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;; Non looping negative test case.
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define void @test4(i32 %n) {
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; CHECK-LABEL: @test4(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[CMP:%.*]] = icmp sgt i32 [[N:%.*]], -2
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; CHECK-NEXT: br i1 [[CMP]], label [[BB:%.*]], label [[EXIT:%.*]]
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; CHECK: bb:
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; CHECK-NEXT: [[EXT_WIDE:%.*]] = sext i32 [[N]] to i64
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; CHECK-NEXT: call void @use64(i64 [[EXT_WIDE]])
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; CHECK-NEXT: [[EXT:%.*]] = trunc i64 [[EXT_WIDE]] to i32
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; CHECK-NEXT: br label [[EXIT]]
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; CHECK: exit:
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; CHECK-NEXT: ret void
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;
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entry:
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%cmp = icmp sgt i32 %n, -2
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br i1 %cmp, label %bb, label %exit
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bb:
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%ext.wide = sext i32 %n to i64
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call void @use64(i64 %ext.wide)
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%ext = trunc i64 %ext.wide to i32
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br label %exit
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exit:
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ret void
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}
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