1; RUN: opt < %s -instcombine -S | FileCheck %s
2; ModuleID = '3555a.c'
3; sqrt(fabs) cannot be negative zero, so we should eliminate the fadd.
4target 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"
5target triple = "i386-apple-darwin9.8"
6
7; CHECK-LABEL: @mysqrt(
8; CHECK-NOT: fadd
9; CHECK: ret
10define double @mysqrt(double %x) nounwind {
11entry:
12  %x_addr = alloca double                         ; <double*> [#uses=2]
13  %retval = alloca double, align 8                ; <double*> [#uses=2]
14  %0 = alloca double, align 8                     ; <double*> [#uses=2]
15  %"alloca point" = bitcast i32 0 to i32          ; <i32> [#uses=0]
16  store double %x, double* %x_addr
17  %1 = load double, double* %x_addr, align 8              ; <double> [#uses=1]
18  %2 = call double @fabs(double %1) nounwind readnone ; <double> [#uses=1]
19  %3 = call double @sqrt(double %2) nounwind readonly ; <double> [#uses=1]
20  %4 = fadd double %3, 0.000000e+00               ; <double> [#uses=1]
21  store double %4, double* %0, align 8
22  %5 = load double, double* %0, align 8                   ; <double> [#uses=1]
23  store double %5, double* %retval, align 8
24  br label %return
25
26return:                                           ; preds = %entry
27  %retval1 = load double, double* %retval                 ; <double> [#uses=1]
28  ret double %retval1
29}
30
31declare double @fabs(double)
32
33declare double @sqrt(double) nounwind readonly
34