1 ; RUN: opt < %s -gvn -S | FileCheck %s 2 ; XFAIL: * 3 ; FIXME: This should be promotable, but memdep/gvn don't track values 4 ; path/edge sensitively enough. 5 6 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" 7 target triple = "i386-apple-darwin7" 8 9 define i32 @g(i32* %b, i32* %c) nounwind { 10 entry: 11 store i32 1, i32* %b 12 store i32 2, i32* %c 13 14 %t1 = icmp eq i32* %b, null ; <i1> [#uses=1] 15 br i1 %t1, label %bb, label %bb2 16 17 bb: ; preds = %entry 18 br label %bb2 19 20 bb2: ; preds = %bb1, %bb 21 %c_addr.0 = phi i32* [ %b, %entry ], [ %c, %bb ] ; <i32*> [#uses=1] 22 %cv = load i32* %c_addr.0, align 4 ; <i32> [#uses=1] 23 ret i32 %cv 24 ; CHECK: bb2: 25 ; CHECK-NOT: load i32 26 ; CHECK: ret i32 27 } 28 29
