1 ; RUN: llvm-as < %s | llc -march=x86-64 | not grep cmov
4 ; LSR should be able to eliminate both smax and umax expressions
7 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"
9 define void @fs(double* nocapture %p, i64 %n) nounwind {
11 %tmp = icmp slt i64 %n, 1 ; <i1> [#uses=1]
12 %smax = select i1 %tmp, i64 1, i64 %n ; <i64> [#uses=1]
15 bb: ; preds = %bb, %entry
16 %i.0 = phi i64 [ 0, %entry ], [ %0, %bb ] ; <i64> [#uses=2]
17 %scevgep = getelementptr double* %p, i64 %i.0 ; <double*> [#uses=1]
18 store double 0.000000e+00, double* %scevgep, align 8
19 %0 = add i64 %i.0, 1 ; <i64> [#uses=2]
20 %exitcond = icmp eq i64 %0, %smax ; <i1> [#uses=1]
21 br i1 %exitcond, label %return, label %bb
27 define void @bs(double* nocapture %p, i64 %n) nounwind {
29 %tmp = icmp sge i64 %n, 1 ; <i1> [#uses=1]
30 %smax = select i1 %tmp, i64 %n, i64 1 ; <i64> [#uses=1]
33 bb: ; preds = %bb, %entry
34 %i.0 = phi i64 [ 0, %entry ], [ %0, %bb ] ; <i64> [#uses=2]
35 %scevgep = getelementptr double* %p, i64 %i.0 ; <double*> [#uses=1]
36 store double 0.000000e+00, double* %scevgep, align 8
37 %0 = add i64 %i.0, 1 ; <i64> [#uses=2]
38 %exitcond = icmp eq i64 %0, %smax ; <i1> [#uses=1]
39 br i1 %exitcond, label %return, label %bb
45 define void @fu(double* nocapture %p, i64 %n) nounwind {
47 %tmp = icmp eq i64 %n, 0 ; <i1> [#uses=1]
48 %umax = select i1 %tmp, i64 1, i64 %n ; <i64> [#uses=1]
51 bb: ; preds = %bb, %entry
52 %i.0 = phi i64 [ 0, %entry ], [ %0, %bb ] ; <i64> [#uses=2]
53 %scevgep = getelementptr double* %p, i64 %i.0 ; <double*> [#uses=1]
54 store double 0.000000e+00, double* %scevgep, align 8
55 %0 = add i64 %i.0, 1 ; <i64> [#uses=2]
56 %exitcond = icmp eq i64 %0, %umax ; <i1> [#uses=1]
57 br i1 %exitcond, label %return, label %bb
63 define void @bu(double* nocapture %p, i64 %n) nounwind {
65 %tmp = icmp ne i64 %n, 0 ; <i1> [#uses=1]
66 %umax = select i1 %tmp, i64 %n, i64 1 ; <i64> [#uses=1]
69 bb: ; preds = %bb, %entry
70 %i.0 = phi i64 [ 0, %entry ], [ %0, %bb ] ; <i64> [#uses=2]
71 %scevgep = getelementptr double* %p, i64 %i.0 ; <double*> [#uses=1]
72 store double 0.000000e+00, double* %scevgep, align 8
73 %0 = add i64 %i.0, 1 ; <i64> [#uses=2]
74 %exitcond = icmp eq i64 %0, %umax ; <i1> [#uses=1]
75 br i1 %exitcond, label %return, label %bb