Fix vbroadcast matching logic to early unmatch if the node doesn't have
[oota-llvm.git] / test / CodeGen / X86 / fold-add.ll
1 ; RUN: llc < %s -march=x86-64 | FileCheck %s
2
3 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128"
4 target triple = "x86_64-apple-darwin9.6"
5 @prev_length = internal global i32 0            ; <i32*> [#uses=1]
6 @window = internal global [65536 x i8] zeroinitializer, align 32                ; <[65536 x i8]*> [#uses=1]
7 @llvm.used = appending global [1 x i8*] [i8* bitcast (i32 (i32)* @longest_match to i8*)]                ; <[1 x i8*]*> [#uses=0]
8
9 define fastcc i32 @longest_match(i32 %cur_match) nounwind {
10 ; CHECK: longest_match:
11 ; CHECK-NOT: ret
12 ; CHECK: cmpb $0, (%r{{.*}},%r{{.*}})
13 ; CHECK: ret
14
15 entry:
16         %0 = load i32* @prev_length, align 4            ; <i32> [#uses=3]
17         %1 = zext i32 %cur_match to i64         ; <i64> [#uses=1]
18         %2 = sext i32 %0 to i64         ; <i64> [#uses=1]
19         %.sum3 = add i64 %1, %2         ; <i64> [#uses=1]
20         %3 = getelementptr [65536 x i8]* @window, i64 0, i64 %.sum3             ; <i8*> [#uses=1]
21         %4 = load i8* %3, align 1               ; <i8> [#uses=1]
22         %5 = icmp eq i8 %4, 0           ; <i1> [#uses=1]
23         br i1 %5, label %bb5, label %bb23
24
25 bb5:            ; preds = %entry
26         ret i32 %0
27
28 bb23:           ; preds = %entry
29         ret i32 %0
30 }