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