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[InstCombine] Add pre-commit tests. NFC.
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‎llvm/test/Transforms/InstCombine/icmp-dom.ll

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@@ -534,3 +534,215 @@ else:
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%cmp1 = icmp eq i32 %and1, 0
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ret i1 %cmp1
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}
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; TODO: X != Y implies X | Y != 0
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define i1 @or_nonzero_from_nonequal(i8 %x, i8 %y) {
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; CHECK-LABEL: @or_nonzero_from_nonequal(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[COND:%.*]] = icmp eq i8 [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: br i1 [[COND]], label [[IF_ELSE:%.*]], label [[IF_THEN:%.*]]
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; CHECK: if.then:
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; CHECK-NEXT: [[OR:%.*]] = or i8 [[X]], [[Y]]
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; CHECK-NEXT: [[CMP:%.*]] = icmp eq i8 [[OR]], 0
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; CHECK-NEXT: ret i1 [[CMP]]
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; CHECK: if.else:
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; CHECK-NEXT: ret i1 false
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;
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entry:
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%cond = icmp eq i8 %x, %y
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br i1 %cond, label %if.else, label %if.then
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if.then:
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%or = or i8 %x, %y
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%cmp = icmp eq i8 %or, 0
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ret i1 %cmp
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if.else:
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ret i1 false
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}
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define i1 @test_nonequal_domcond1(i64 %x, i64 %y, i64 %z, i64 %w) {
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; CHECK-LABEL: @test_nonequal_domcond1(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[COND1:%.*]] = icmp eq i64 [[Y:%.*]], [[X:%.*]]
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; CHECK-NEXT: [[COND2:%.*]] = icmp eq i64 [[W:%.*]], [[Z:%.*]]
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; CHECK-NEXT: [[OR_COND:%.*]] = select i1 [[COND1]], i1 true, i1 [[COND2]]
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; CHECK-NEXT: br i1 [[OR_COND]], label [[IF_END:%.*]], label [[IF_THEN:%.*]]
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; CHECK: if.then:
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; CHECK-NEXT: [[SUB1:%.*]] = sub i64 [[W]], [[Z]]
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; CHECK-NEXT: [[SUB2:%.*]] = sub i64 [[Y]], [[X]]
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; CHECK-NEXT: [[UMIN:%.*]] = call i64 @llvm.umin.i64(i64 [[SUB1]], i64 [[SUB2]])
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; CHECK-NEXT: [[CMP:%.*]] = icmp eq i64 [[UMIN]], 0
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; CHECK-NEXT: ret i1 [[CMP]]
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; CHECK: if.end:
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; CHECK-NEXT: ret i1 false
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;
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entry:
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%cond1 = icmp eq i64 %y, %x
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%cond2 = icmp eq i64 %w, %z
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%or.cond = select i1 %cond1, i1 true, i1 %cond2
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br i1 %or.cond, label %if.end, label %if.then
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if.then:
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%sub1 = sub i64 %w, %z
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%sub2 = sub i64 %y, %x
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%umin = call i64 @llvm.umin.i64(i64 %sub1, i64 %sub2)
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%cmp = icmp eq i64 %umin, 0
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ret i1 %cmp
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if.end:
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ret i1 false
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}
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define i1 @test_nonequal_domcond2(i64 %x, i64 %y, i64 %z, i64 %w) {
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; CHECK-LABEL: @test_nonequal_domcond2(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[COND1:%.*]] = icmp ne i64 [[Y:%.*]], [[X:%.*]]
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; CHECK-NEXT: [[COND2:%.*]] = icmp ne i64 [[W:%.*]], [[Z:%.*]]
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; CHECK-NEXT: [[OR_COND:%.*]] = select i1 [[COND1]], i1 [[COND2]], i1 false
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; CHECK-NEXT: br i1 [[OR_COND]], label [[IF_THEN:%.*]], label [[IF_END:%.*]]
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; CHECK: if.then:
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; CHECK-NEXT: [[SUB1:%.*]] = sub i64 [[W]], [[Z]]
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; CHECK-NEXT: [[SUB2:%.*]] = sub i64 [[Y]], [[X]]
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; CHECK-NEXT: [[UMIN:%.*]] = call i64 @llvm.umin.i64(i64 [[SUB1]], i64 [[SUB2]])
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; CHECK-NEXT: [[CMP:%.*]] = icmp eq i64 [[UMIN]], 0
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; CHECK-NEXT: ret i1 [[CMP]]
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; CHECK: if.end:
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; CHECK-NEXT: ret i1 false
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;
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entry:
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%cond1 = icmp ne i64 %y, %x
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%cond2 = icmp ne i64 %w, %z
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%or.cond = select i1 %cond1, i1 %cond2, i1 false
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br i1 %or.cond, label %if.then, label %if.end
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if.then:
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%sub1 = sub i64 %w, %z
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%sub2 = sub i64 %y, %x
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%umin = call i64 @llvm.umin.i64(i64 %sub1, i64 %sub2)
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%cmp = icmp eq i64 %umin, 0
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ret i1 %cmp
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if.end:
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ret i1 false
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}
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define i1 @test_nonequal_assume(i64 %x, i64 %y, i64 %z, i64 %w) {
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; CHECK-LABEL: @test_nonequal_assume(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[COND1:%.*]] = icmp ne i64 [[Y:%.*]], [[X:%.*]]
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; CHECK-NEXT: call void @llvm.assume(i1 [[COND1]])
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; CHECK-NEXT: [[COND2:%.*]] = icmp ne i64 [[W:%.*]], [[Z:%.*]]
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; CHECK-NEXT: call void @llvm.assume(i1 [[COND2]])
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; CHECK-NEXT: [[SUB1:%.*]] = sub i64 [[W]], [[Z]]
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; CHECK-NEXT: [[SUB2:%.*]] = sub i64 [[Y]], [[X]]
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; CHECK-NEXT: [[UMIN:%.*]] = call i64 @llvm.umin.i64(i64 [[SUB1]], i64 [[SUB2]])
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; CHECK-NEXT: [[CMP:%.*]] = icmp eq i64 [[UMIN]], 0
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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entry:
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%cond1 = icmp ne i64 %y, %x
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call void @llvm.assume(i1 %cond1)
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%cond2 = icmp ne i64 %w, %z
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call void @llvm.assume(i1 %cond2)
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%sub1 = sub i64 %w, %z
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%sub2 = sub i64 %y, %x
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%umin = call i64 @llvm.umin.i64(i64 %sub1, i64 %sub2)
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%cmp = icmp eq i64 %umin, 0
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ret i1 %cmp
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}
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; Negative tests
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define i1 @test_nonequal_invalid_domcond1(i64 %x, i64 %y, i64 %z, i64 %w) {
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; CHECK-LABEL: @test_nonequal_invalid_domcond1(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[COND1:%.*]] = icmp ne i64 [[Y:%.*]], [[X:%.*]]
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; CHECK-NEXT: [[COND2:%.*]] = icmp eq i64 [[W:%.*]], [[Z:%.*]]
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; CHECK-NEXT: [[OR_COND:%.*]] = select i1 [[COND1]], i1 true, i1 [[COND2]]
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; CHECK-NEXT: br i1 [[OR_COND]], label [[IF_END:%.*]], label [[IF_THEN:%.*]]
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; CHECK: if.then:
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; CHECK-NEXT: ret i1 true
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; CHECK: if.end:
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; CHECK-NEXT: ret i1 false
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;
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entry:
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%cond1 = icmp ne i64 %y, %x
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%cond2 = icmp eq i64 %w, %z
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%or.cond = select i1 %cond1, i1 true, i1 %cond2
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br i1 %or.cond, label %if.end, label %if.then
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if.then:
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%sub1 = sub i64 %w, %z
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%sub2 = sub i64 %y, %x
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%umin = call i64 @llvm.umin.i64(i64 %sub1, i64 %sub2)
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%cmp = icmp eq i64 %umin, 0
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ret i1 %cmp
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if.end:
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ret i1 false
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}
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define i1 @test_nonequal_invalid_domcond2(i64 %x, i64 %y, i64 %z, i64 %w) {
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; CHECK-LABEL: @test_nonequal_invalid_domcond2(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[COND1:%.*]] = icmp eq i64 [[Y:%.*]], [[X:%.*]]
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; CHECK-NEXT: [[COND2:%.*]] = icmp eq i64 [[W:%.*]], [[Z:%.*]]
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; CHECK-NEXT: [[OR_COND:%.*]] = select i1 [[COND1]], i1 true, i1 [[COND2]]
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; CHECK-NEXT: br i1 [[OR_COND]], label [[IF_THEN:%.*]], label [[IF_END:%.*]]
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; CHECK: if.then:
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; CHECK-NEXT: br label [[IF_END]]
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; CHECK: if.end:
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; CHECK-NEXT: [[SUB1:%.*]] = sub i64 [[W]], [[Z]]
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; CHECK-NEXT: [[SUB2:%.*]] = sub i64 [[Y]], [[X]]
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; CHECK-NEXT: [[UMIN:%.*]] = call i64 @llvm.umin.i64(i64 [[SUB1]], i64 [[SUB2]])
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; CHECK-NEXT: [[CMP:%.*]] = icmp eq i64 [[UMIN]], 0
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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entry:
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%cond1 = icmp eq i64 %y, %x
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%cond2 = icmp eq i64 %w, %z
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%or.cond = select i1 %cond1, i1 true, i1 %cond2
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br i1 %or.cond, label %if.then, label %if.end
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if.then:
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br label %if.end
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if.end:
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%sub1 = sub i64 %w, %z
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%sub2 = sub i64 %y, %x
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%umin = call i64 @llvm.umin.i64(i64 %sub1, i64 %sub2)
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%cmp = icmp eq i64 %umin, 0
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ret i1 %cmp
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}
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define i1 @test_nonequal_invalid_assume(i64 %x, i64 %y, i64 %z, i64 %w) {
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; CHECK-LABEL: @test_nonequal_invalid_assume(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[SUB1:%.*]] = sub i64 [[W:%.*]], [[Z:%.*]]
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; CHECK-NEXT: [[SUB2:%.*]] = sub i64 [[Y:%.*]], [[X:%.*]]
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; CHECK-NEXT: [[UMIN:%.*]] = call i64 @llvm.umin.i64(i64 [[SUB1]], i64 [[SUB2]])
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; CHECK-NEXT: [[CMP:%.*]] = icmp eq i64 [[UMIN]], 0
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; CHECK-NEXT: call void @side_effect()
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; CHECK-NEXT: [[COND1:%.*]] = icmp ne i64 [[Y]], [[X]]
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; CHECK-NEXT: call void @llvm.assume(i1 [[COND1]])
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; CHECK-NEXT: [[COND2:%.*]] = icmp ne i64 [[W]], [[Z]]
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; CHECK-NEXT: call void @llvm.assume(i1 [[COND2]])
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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entry:
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%sub1 = sub i64 %w, %z
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%sub2 = sub i64 %y, %x
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%umin = call i64 @llvm.umin.i64(i64 %sub1, i64 %sub2)
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%cmp = icmp eq i64 %umin, 0
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call void @side_effect()
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%cond1 = icmp ne i64 %y, %x
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call void @llvm.assume(i1 %cond1)
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%cond2 = icmp ne i64 %w, %z
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call void @llvm.assume(i1 %cond2)
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ret i1 %cmp
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}
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declare void @side_effect()

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