Dan Gohman | 5ee2e68 | 2009-06-19 23:23:27 +0000 | [diff] [blame^] | 1 | ; RUN: llvm-as < %s | llc -march=x86-64 > %t |
| 2 | ; RUN: grep cmov %t | count 2 |
| 3 | ; RUN: grep jne %t | count 1 |
| 4 | |
| 5 | ; LSR's OptimizeMax function shouldn't try to eliminate this max, because |
| 6 | ; it has three operands. |
| 7 | |
| 8 | 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 | |
| 10 | define void @foo(double* nocapture %p, i64 %x, i64 %y) nounwind { |
| 11 | entry: |
| 12 | %tmp = icmp eq i64 %y, 0 ; <i1> [#uses=1] |
| 13 | %umax = select i1 %tmp, i64 1, i64 %y ; <i64> [#uses=2] |
| 14 | %tmp8 = icmp ugt i64 %umax, %x ; <i1> [#uses=1] |
| 15 | %umax9 = select i1 %tmp8, i64 %umax, i64 %x ; <i64> [#uses=1] |
| 16 | br label %bb4 |
| 17 | |
| 18 | bb4: ; preds = %bb4, %entry |
| 19 | %i.07 = phi i64 [ 0, %entry ], [ %2, %bb4 ] ; <i64> [#uses=2] |
| 20 | %scevgep = getelementptr double* %p, i64 %i.07 ; <double*> [#uses=2] |
| 21 | %0 = load double* %scevgep, align 8 ; <double> [#uses=1] |
| 22 | %1 = fmul double %0, 2.000000e+00 ; <double> [#uses=1] |
| 23 | store double %1, double* %scevgep, align 8 |
| 24 | %2 = add i64 %i.07, 1 ; <i64> [#uses=2] |
| 25 | %exitcond = icmp eq i64 %2, %umax9 ; <i1> [#uses=1] |
| 26 | br i1 %exitcond, label %return, label %bb4 |
| 27 | |
| 28 | return: ; preds = %bb4 |
| 29 | ret void |
| 30 | } |