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add DEBUG and -stats output to earlycse.

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Teach it to CSE the rest of the non-side-effecting instructions.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122716 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2011-01-02 23:19:45 +00:00
parent cc9eab26b3
commit 91139ccd99
3 changed files with 52 additions and 8 deletions
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15
test/Transforms/EarlyCSE/basic.ll
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@@ -6,16 +6,27 @@ define void @test1(i8 %V, i32 *%P) {
%A = bitcast i64 42 to double ;; dead
%B = add i32 4, 19 ;; constant folds
store i32 %B, i32* %P
; CHECK-NEXT: store i32 23, i32* %P
%C = zext i8 %V to i32
%D = zext i8 %V to i32 ;; CSE
volatile store i32 %C, i32* %P
volatile store i32 %D, i32* %P
; CHECK-NEXT: %C = zext i8 %V to i32
; CHECK-NEXT: volatile store i32 %C
; CHECK-NEXT: volatile store i32 %C
%E = add i32 %C, %C
%F = add i32 %C, %C
volatile store i32 %E, i32* %P
volatile store i32 %F, i32* %P
; CHECK-NEXT: %E = add i32 %C, %C
; CHECK-NEXT: volatile store i32 %E
; CHECK-NEXT: volatile store i32 %E
%G = add nuw i32 %C, %C ;; not a CSE with E
volatile store i32 %G, i32* %P
; CHECK-NEXT: %G = add nuw i32 %C, %C
; CHECK-NEXT: volatile store i32 %G
ret void
}