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21505280df
While not CVP's fault, this caused miscompiles (PR31181). Reverting until those are resolved. (This also reverts the follow-ups r288154 and r288161 which removed the flag.) llvm-svn: 296030
215 lines
4.1 KiB
LLVM
215 lines
4.1 KiB
LLVM
; RUN: opt < %s -correlated-propagation -cvp-dont-process-adds=false -S | FileCheck %s
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; CHECK-LABEL: @test0(
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define void @test0(i32 %a) {
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entry:
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%cmp = icmp slt i32 %a, 100
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br i1 %cmp, label %bb, label %exit
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bb:
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; CHECK: %add = add nsw i32 %a, 1
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%add = add i32 %a, 1
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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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; CHECK-LABEL: @test1(
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define void @test1(i32 %a) {
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entry:
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%cmp = icmp ult i32 %a, 100
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br i1 %cmp, label %bb, label %exit
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bb:
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; CHECK: %add = add nuw nsw i32 %a, 1
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%add = add i32 %a, 1
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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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; CHECK-LABEL: @test2(
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define void @test2(i32 %a) {
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entry:
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%cmp = icmp ult i32 %a, -1
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br i1 %cmp, label %bb, label %exit
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bb:
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; CHECK: %add = add nuw i32 %a, 1
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%add = add i32 %a, 1
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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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; CHECK-LABEL: @test3(
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define void @test3(i32 %a) {
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entry:
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%cmp = icmp ule i32 %a, -1
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br i1 %cmp, label %bb, label %exit
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bb:
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; CHECK: %add = add i32 %a, 1
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%add = add i32 %a, 1
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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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; CHECK-LABEL: @test4(
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define void @test4(i32 %a) {
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entry:
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%cmp = icmp slt i32 %a, 2147483647
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br i1 %cmp, label %bb, label %exit
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bb:
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; CHECK: %add = add nsw i32 %a, 1
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%add = add i32 %a, 1
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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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; CHECK-LABEL: @test5(
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define void @test5(i32 %a) {
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entry:
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%cmp = icmp sle i32 %a, 2147483647
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br i1 %cmp, label %bb, label %exit
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bb:
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; CHECK: %add = add i32 %a, 1
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%add = add i32 %a, 1
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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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; Check for a corner case where an integer value is represented with a constant
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; LVILatticeValue instead of constantrange. Check that we don't fail with an
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; assertion in this case.
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@b = global i32 0, align 4
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define void @test6(i32 %a) {
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bb:
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%add = add i32 %a, ptrtoint (i32* @b to i32)
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ret void
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}
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; Check that we can gather information for conditions is the form of
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; and ( i s< 100, Unknown )
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; CHECK-LABEL: @test7(
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define void @test7(i32 %a, i1 %flag) {
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entry:
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%cmp.1 = icmp slt i32 %a, 100
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%cmp = and i1 %cmp.1, %flag
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br i1 %cmp, label %bb, label %exit
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bb:
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; CHECK: %add = add nsw i32 %a, 1
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%add = add i32 %a, 1
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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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; Check that we can gather information for conditions is the form of
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; and ( i s< 100, i s> 0 )
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; CHECK-LABEL: @test8(
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define void @test8(i32 %a) {
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entry:
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%cmp.1 = icmp slt i32 %a, 100
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%cmp.2 = icmp sgt i32 %a, 0
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%cmp = and i1 %cmp.1, %cmp.2
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br i1 %cmp, label %bb, label %exit
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bb:
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; CHECK: %add = add nuw nsw i32 %a, 1
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%add = add i32 %a, 1
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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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; Check that for conditions is the form of cond1 && cond2 we don't mistakenly
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; assume that !cond1 && !cond2 holds down to false path.
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; CHECK-LABEL: @test8_neg(
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define void @test8_neg(i32 %a) {
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entry:
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%cmp.1 = icmp sge i32 %a, 100
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%cmp.2 = icmp sle i32 %a, 0
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%cmp = and i1 %cmp.1, %cmp.2
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br i1 %cmp, label %exit, label %bb
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bb:
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; CHECK: %add = add i32 %a, 1
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%add = add i32 %a, 1
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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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; Check that we can gather information for conditions is the form of
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; and ( i s< 100, and (i s> 0, Unknown )
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; CHECK-LABEL: @test9(
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define void @test9(i32 %a, i1 %flag) {
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entry:
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%cmp.1 = icmp slt i32 %a, 100
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%cmp.2 = icmp sgt i32 %a, 0
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%cmp.3 = and i1 %cmp.2, %flag
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%cmp = and i1 %cmp.1, %cmp.3
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br i1 %cmp, label %bb, label %exit
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bb:
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; CHECK: %add = add nuw nsw i32 %a, 1
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%add = add i32 %a, 1
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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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; Check that we can gather information for conditions is the form of
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; and ( i s< Unknown, ... )
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; CHECK-LABEL: @test10(
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define void @test10(i32 %a, i32 %b, i1 %flag) {
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entry:
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%cmp.1 = icmp slt i32 %a, %b
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%cmp = and i1 %cmp.1, %flag
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br i1 %cmp, label %bb, label %exit
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bb:
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; CHECK: %add = add nsw i32 %a, 1
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%add = add i32 %a, 1
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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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@limit = external global i32
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; CHECK-LABEL: @test11(
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define i32 @test11(i32* %p, i32 %i) {
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%limit = load i32, i32* %p, !range !{i32 0, i32 2147483647}
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%within.1 = icmp ugt i32 %limit, %i
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%i.plus.7 = add i32 %i, 7
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%within.2 = icmp ugt i32 %limit, %i.plus.7
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%within = and i1 %within.1, %within.2
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br i1 %within, label %then, label %else
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then:
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; CHECK: %i.plus.6 = add nuw nsw i32 %i, 6
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%i.plus.6 = add i32 %i, 6
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ret i32 %i.plus.6
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else:
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ret i32 0
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}
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