mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-26 07:29:55 +00:00
exact/nsw/nuw shifts and have instcombine infer them when it can prove that the relevant properties are true for a given shift without them. Also, a variety of refactoring to use the new patternmatch logic thrown in for good luck. I believe that this takes care of a bunch of related code quality issues attached to PR8862. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125267 91177308-0d34-0410-b5e6-96231b3b80d8
36 lines
1.2 KiB
LLVM
36 lines
1.2 KiB
LLVM
; PR1271
|
|
; RUN: opt < %s -instcombine -S | \
|
|
; RUN: grep {ashr exact i32 %.mp137, 2}
|
|
|
|
target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64"
|
|
target triple = "i686-pc-linux-gnu"
|
|
|
|
|
|
define i1 @test(i32* %tmp141, i32* %tmp145,
|
|
i32 %b8, i32 %iftmp.430.0, i32* %tmp134.out, i32* %tmp137.out)
|
|
{
|
|
newFuncRoot:
|
|
%tmp133 = and i32 %b8, 1 ; <i32> [#uses=1]
|
|
%tmp134 = shl i32 %tmp133, 3 ; <i32> [#uses=3]
|
|
%tmp136 = ashr i32 %b8, 1 ; <i32> [#uses=1]
|
|
%tmp137 = shl i32 %tmp136, 3 ; <i32> [#uses=3]
|
|
%tmp139 = ashr i32 %tmp134, 2 ; <i32> [#uses=1]
|
|
store i32 %tmp139, i32* %tmp141
|
|
%tmp143 = ashr i32 %tmp137, 2 ; <i32> [#uses=1]
|
|
store i32 %tmp143, i32* %tmp145
|
|
icmp eq i32 %iftmp.430.0, 0 ; <i1>:0 [#uses=1]
|
|
zext i1 %0 to i8 ; <i8>:1 [#uses=1]
|
|
icmp ne i8 %1, 0 ; <i1>:2 [#uses=1]
|
|
br i1 %2, label %cond_true147.exitStub, label %cond_false252.exitStub
|
|
|
|
cond_true147.exitStub: ; preds = %newFuncRoot
|
|
store i32 %tmp134, i32* %tmp134.out
|
|
store i32 %tmp137, i32* %tmp137.out
|
|
ret i1 true
|
|
|
|
cond_false252.exitStub: ; preds = %newFuncRoot
|
|
store i32 %tmp134, i32* %tmp134.out
|
|
store i32 %tmp137, i32* %tmp137.out
|
|
ret i1 false
|
|
}
|