29 lines
791 B
LLVM
29 lines
791 B
LLVM
|
; RUN: opt < %s -gvn -S | FileCheck %s
|
||
|
|
; XFAIL: *
|
||
|
|
; FIXME: This should be promotable, but memdep/gvn don't track values
|
||
|
|
; path/edge sensitively enough.
|
||
|
|
|
||
|
|
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-f80:128:128"
|
||
|
|
target triple = "i386-apple-darwin7"
|
||
|
|
|
||
|
|
define i32 @g(i32* %b, i32* %c) nounwind {
|
||
|
|
entry:
|
||
|
|
store i32 1, i32* %b
|
||
|
|
store i32 2, i32* %c
|
||
|
|
|
||
|
|
%t1 = icmp eq i32* %b, null ; <i1> [#uses=1]
|
||
|
|
br i1 %t1, label %bb, label %bb2
|
||
|
|
|
||
|
|
bb: ; preds = %entry
|
||
|
|
br label %bb2
|
||
|
|
|
||
|
|
bb2: ; preds = %bb1, %bb
|
||
|
|
%c_addr.0 = phi i32* [ %b, %entry ], [ %c, %bb ] ; <i32*> [#uses=1]
|
||
|
|
%cv = load i32* %c_addr.0, align 4 ; <i32> [#uses=1]
|
||
|
|
ret i32 %cv
|
||
|
|
; CHECK: bb2:
|
||
|
|
; CHECK-NOT: load i32
|
||
|
|
; CHECK: ret i32
|
||
|
|
}
|
||
|
|
|