1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4
2 ; RUN: opt < %s -passes=newgvn -S | FileCheck %s
3 ; Should delete the second call to strlen even though the intervening strchr call exists.
5 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"
6 target triple = "i386-apple-darwin7"
8 define ptr @test(ptr %P, ptr %Q, i32 %x, i32 %y) nounwind readonly {
9 ; CHECK-LABEL: define ptr @test(
10 ; CHECK-SAME: ptr [[P:%.*]], ptr [[Q:%.*]], i32 [[X:%.*]], i32 [[Y:%.*]]) #[[ATTR0:[0-9]+]] {
12 ; CHECK-NEXT: [[TMP0:%.*]] = tail call i32 @strlen(ptr [[P]])
13 ; CHECK-NEXT: [[TMP1:%.*]] = icmp eq i32 [[TMP0]], 0
14 ; CHECK-NEXT: br i1 [[TMP1]], label [[BB:%.*]], label [[BB1:%.*]]
16 ; CHECK-NEXT: [[TMP2:%.*]] = sdiv i32 [[X]], [[Y]]
17 ; CHECK-NEXT: br label [[BB1]]
19 ; CHECK-NEXT: [[X_ADDR_0:%.*]] = phi i32 [ [[TMP2]], [[BB]] ], [ [[X]], [[ENTRY:%.*]] ]
20 ; CHECK-NEXT: [[TMP3:%.*]] = tail call ptr @strchr(ptr [[Q]], i32 97)
21 ; CHECK-NEXT: [[TMP4:%.*]] = add i32 [[X_ADDR_0]], [[TMP0]]
22 ; CHECK-NEXT: [[TMP5:%.*]] = getelementptr i8, ptr [[TMP3]], i32 [[X_ADDR_0]]
23 ; CHECK-NEXT: ret ptr [[TMP5]]
26 %0 = tail call i32 @strlen(ptr %P) ; <i32> [#uses=2]
27 %1 = icmp eq i32 %0, 0 ; <i1> [#uses=1]
28 br i1 %1, label %bb, label %bb1
31 %2 = sdiv i32 %x, %y ; <i32> [#uses=1]
34 bb1: ; preds = %bb, %entry
35 %x_addr.0 = phi i32 [ %2, %bb ], [ %x, %entry ] ; <i32> [#uses=1]
36 %3 = tail call ptr @strchr(ptr %Q, i32 97) ; <ptr> [#uses=1]
37 %4 = tail call i32 @strlen(ptr %P) ; <i32> [#uses=1]
38 %5 = add i32 %x_addr.0, %0 ; <i32> [#uses=1]
39 %.sum = sub i32 %5, %4 ; <i32> [#uses=1]
40 %6 = getelementptr i8, ptr %3, i32 %.sum ; <ptr> [#uses=1]
45 declare i32 @strlen(ptr) nounwind readonly
47 declare ptr @strchr(ptr, i32) nounwind readonly