llvm-6502/test/Transforms/GVN/2007-07-26-PhiErasure.ll
Chris Lattner f33131685b make GVN try to rename inputs to the resultant replaced values, which
cleans up the generated code a bit.  This should have the added benefit of
not randomly renaming functions/globals like my previous patch did. :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61023 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-15 03:46:38 +00:00

29 lines
1.1 KiB
LLVM

; RUN: llvm-as < %s | opt -gvn | llvm-dis | grep {tmp298316 = phi i32 }
%struct..0anon = type { i32 }
%struct.FILE = type { i8*, i32, i32, i16, i16, %struct.__sbuf, i32, i8*, i32 (i8*)*, i32 (i8*, i8*, i32)*, i64 (i8*, i64, i32)*, i32 (i8*, i8*, i32)*, %struct.__sbuf, %struct.__sFILEX*, i32, [3 x i8], [1 x i8], %struct.__sbuf, i32, i64 }
%struct.__sFILEX = type opaque
%struct.__sbuf = type { i8*, i32 }
%struct.rtx_def = type { i16, i8, i8, [1 x %struct..0anon] }
@n_spills = external global i32 ; <i32*> [#uses=2]
define i32 @reload(%struct.rtx_def* %first, i32 %global, %struct.FILE* %dumpfile) {
cond_next2835.1: ; preds = %cond_next2861
%tmp2922 = load i32* @n_spills, align 4 ; <i32> [#uses=0]
br label %bb2928
bb2928: ; preds = %cond_next2835.1, %cond_next2943
br i1 false, label %cond_next2943, label %cond_true2935
cond_true2935: ; preds = %bb2928
br label %cond_next2943
cond_next2943: ; preds = %cond_true2935, %bb2928
br i1 false, label %bb2982.preheader, label %bb2928
bb2982.preheader: ; preds = %cond_next2943
%tmp298316 = load i32* @n_spills, align 4 ; <i32> [#uses=0]
ret i32 0
}