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llvm-project/llvm/test/Transforms/ConstProp/constant-expr.ll

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Teach the constant folder how to handle a few simple i1 cases. llvm-svn: 82340
2009-09-20 08:04:02 +08:00
; RUN: llvm-as < %s | llvm-dis | FileCheck %s
@X = external global i8
@Y = external global i8
@Z = external global i8
Rewrite this check so that it checks what it's supposed to and doesn't use CHECK-NOT. llvm-svn: 82383
2009-09-20 15:00:24 +08:00
@A = global i1 add (i1 icmp ult (i8* @X, i8* @Y), i1 icmp ult (i8* @X, i8* @Z))
; CHECK: @A = global i1 xor (i1 icmp ult (i8* @X, i8* @Y), i1 icmp ult (i8* @X, i8* @Z)) ; <i1*> [#uses=0]
@B = global i1 sub (i1 icmp ult (i8* @X, i8* @Y), i1 icmp ult (i8* @X, i8* @Z))
; CHECK: @B = global i1 xor (i1 icmp ult (i8* @X, i8* @Y), i1 icmp ult (i8* @X, i8* @Z)) ; <i1*> [#uses=0]
@C = global i1 mul (i1 icmp ult (i8* @X, i8* @Y), i1 icmp ult (i8* @X, i8* @Z))
; CHECK: @C = global i1 and (i1 icmp ult (i8* @X, i8* @Y), i1 icmp ult (i8* @X, i8* @Z)) ; <i1*> [#uses=0]
Teach the constant folder how to handle a few simple i1 cases. llvm-svn: 82340
2009-09-20 08:04:02 +08:00
Rewrite this check so that it checks what it's supposed to and doesn't use CHECK-NOT. llvm-svn: 82383
2009-09-20 15:00:24 +08:00
@D = global i1 sdiv (i1 icmp ult (i8* @X, i8* @Y), i1 icmp ult (i8* @X, i8* @Z))
; CHECK: @D = global i1 icmp ult (i8* @X, i8* @Y) ; <i1*> [#uses=0]
@E = global i1 udiv (i1 icmp ult (i8* @X, i8* @Y), i1 icmp ult (i8* @X, i8* @Z))
; CHECK: @E = global i1 icmp ult (i8* @X, i8* @Y) ; <i1*> [#uses=0]
@F = global i1 srem (i1 icmp ult (i8* @X, i8* @Y), i1 icmp ult (i8* @X, i8* @Z))
; CHECK: @F = global i1 false ; <i1*> [#uses=0]
@G = global i1 urem (i1 icmp ult (i8* @X, i8* @Y), i1 icmp ult (i8* @X, i8* @Z))
; CHECK: @G = global i1 false ; <i1*> [#uses=0]
Try turning icmp(bitcast(x), bitcast(y)) into icmp(bitcast(bitcast(x)), y) in the hopes that the two bitcasts will merge. llvm-svn: 82371
2009-09-20 13:48:50 +08:00
Rewrite this check so that it checks what it's supposed to and doesn't use CHECK-NOT. llvm-svn: 82383
2009-09-20 15:00:24 +08:00
@H = global i1 icmp ule (i32* bitcast (i8* @X to i32*), i32* bitcast (i8* @Y to i32*))
; CHECK: @H = global i1 icmp ule (i8* @X, i8* @Y) ; <i1*> [#uses=0]
Try turning icmp(bitcast(x), bitcast(y)) into icmp(bitcast(bitcast(x)), y) in the hopes that the two bitcasts will merge. llvm-svn: 82371
2009-09-20 13:48:50 +08:00
Rewrite this check so that it checks what it's supposed to and doesn't use CHECK-NOT. llvm-svn: 82383
2009-09-20 15:00:24 +08:00
@I = global i1 xor (i1 icmp ult (i8* @X, i8* @Y), i1 false)
; CHECK: @I = global i1 icmp ult (i8* @X, i8* @Y) ; <i1*> [#uses=0]
@J = global i1 xor (i1 icmp ult (i8* @X, i8* @Y), i1 true)
; CHECK: @J = global i1 icmp uge (i8* @X, i8* @Y) ; <i1*> [#uses=0]
Fold 'icmp eq (icmp), true' into an xor(icmp). llvm-svn: 82386
2009-09-20 15:21:39 +08:00
@K = global i1 icmp eq (i1 icmp ult (i8* @X, i8* @Y), i1 false)
; CHECK: @K = global i1 icmp uge (i8* @X, i8* @Y) ; <i1*> [#uses=0]
@L = global i1 icmp eq (i1 icmp ult (i8* @X, i8* @Y), i1 true)
; CHECK: @L = global i1 icmp ult (i8* @X, i8* @Y) ; <i1*> [#uses=0]
@M = global i1 icmp ne (i1 icmp ult (i8* @X, i8* @Y), i1 true)
; CHECK: @M = global i1 icmp uge (i8* @X, i8* @Y) ; <i1*> [#uses=0]
@N = global i1 icmp ne (i1 icmp ult (i8* @X, i8* @Y), i1 false)
; CHECK: @N = global i1 icmp ult (i8* @X, i8* @Y) ; <i1*> [#uses=0]
Peer through zext and sext to eliminate them when it is safe to do so. llvm-svn: 82389
2009-09-20 15:31:25 +08:00
@O = global i1 icmp eq (i32 zext (i1 icmp ult (i8* @X, i8* @Y) to i32), i32 0)
; CHECK: @O = global i1 icmp uge (i8* @X, i8* @Y) ; <i1*> [#uses=0]