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Constant folding support for calls to umul.with.overflow(), basically identical to the smul.with.overflow() code.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128379 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Frits van Bommel
2011-03-27 14:26:13 +00:00
parent f0bf9dfc1f
commit 6208610fd6
4 changed files with 52 additions and 11 deletions
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test/Transforms/ConstProp/overflow-ops.ll
+33 -8
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@@ -2,6 +2,14 @@
%i8i1 = type {i8, i1}
declare {i8, i1} @llvm.uadd.with.overflow.i8(i8, i8)
declare {i8, i1} @llvm.usub.with.overflow.i8(i8, i8)
declare {i8, i1} @llvm.umul.with.overflow.i8(i8, i8)
declare {i8, i1} @llvm.sadd.with.overflow.i8(i8, i8)
declare {i8, i1} @llvm.ssub.with.overflow.i8(i8, i8)
declare {i8, i1} @llvm.smul.with.overflow.i8(i8, i8)
;;-----------------------------
;; uadd
;;-----------------------------
@@ -46,6 +54,28 @@ entry:
; CHECK: ret %i8i1 { i8 -2, i1 true }
}
;;-----------------------------
;; umul
;;-----------------------------
define {i8, i1} @umul_1() nounwind {
entry:
%t = call {i8, i1} @llvm.umul.with.overflow.i8(i8 100, i8 3)
ret {i8, i1} %t
; CHECK: @umul_1
; CHECK: ret %i8i1 { i8 44, i1 true }
}
define {i8, i1} @umul_2() nounwind {
entry:
%t = call {i8, i1} @llvm.umul.with.overflow.i8(i8 100, i8 2)
ret {i8, i1} %t
; CHECK: @umul_2
; CHECK: ret %i8i1 { i8 -56, i1 false }
}
;;-----------------------------
;; sadd
;;-----------------------------
@@ -163,14 +193,9 @@ entry:
; CHECK: ret %i8i1 { i8 -10, i1 false }
}
declare {i8, i1} @llvm.uadd.with.overflow.i8(i8, i8)
declare {i8, i1} @llvm.usub.with.overflow.i8(i8, i8)
declare {i8, i1} @llvm.sadd.with.overflow.i8(i8, i8)
declare {i8, i1} @llvm.ssub.with.overflow.i8(i8, i8)
declare {i8, i1} @llvm.smul.with.overflow.i8(i8, i8)
;;-----------------------------
;; smul
;;-----------------------------
; rdar://8501501
define {i8, i1} @smul_1() nounwind {