| ; RUN: opt < %s -indvars -S | FileCheck %s |
| define void @test1() nounwind { |
| entry: |
| br label %bb |
| |
| bb: ; preds = %bb, %entry |
| %x.0.reg2mem.0 = phi double [ 0.000000e+00, %entry ], [ %1, %bb ] ; <double> [#uses=2] |
| %0 = tail call i32 @foo(double %x.0.reg2mem.0) nounwind ; <i32> [#uses=0] |
| %1 = fadd double %x.0.reg2mem.0, 1.000000e+00 ; <double> [#uses=2] |
| %2 = fcmp olt double %1, 1.000000e+04 ; <i1> [#uses=1] |
| br i1 %2, label %bb, label %return |
| |
| return: ; preds = %bb |
| ret void |
| ; CHECK-LABEL: @test1( |
| ; CHECK: icmp |
| } |
| |
| declare i32 @foo(double) |
| |
| define void @test2() nounwind { |
| entry: |
| br label %bb |
| |
| bb: ; preds = %bb, %entry |
| %x.0.reg2mem.0 = phi double [ -10.000000e+00, %entry ], [ %1, %bb ] ; <double> [#uses=2] |
| %0 = tail call i32 @foo(double %x.0.reg2mem.0) nounwind ; <i32> [#uses=0] |
| %1 = fadd double %x.0.reg2mem.0, 2.000000e+00 ; <double> [#uses=2] |
| %2 = fcmp olt double %1, -1.000000e+00 ; <i1> [#uses=1] |
| br i1 %2, label %bb, label %return |
| |
| return: ; preds = %bb |
| ret void |
| ; CHECK-LABEL: @test2( |
| ; CHECK: icmp |
| } |
| |
| |
| define void @test3() nounwind { |
| entry: |
| br label %bb |
| |
| bb: ; preds = %bb, %entry |
| %x.0.reg2mem.0 = phi double [ 0.000000e+00, %entry ], [ %1, %bb ] |
| %0 = tail call i32 @foo(double %x.0.reg2mem.0) nounwind |
| %1 = fadd double %x.0.reg2mem.0, 1.000000e+00 |
| %2 = fcmp olt double %1, -1.000000e+00 |
| br i1 %2, label %bb, label %return |
| |
| return: |
| ret void |
| ; CHECK-LABEL: @test3( |
| ; CHECK: fcmp |
| } |
| |
| define void @test4() nounwind { |
| entry: |
| br label %bb |
| |
| bb: ; preds = %bb, %entry |
| %x.0.reg2mem.0 = phi double [ 40.000000e+00, %entry ], [ %1, %bb ] ; <double> [#uses=2] |
| %0 = tail call i32 @foo(double %x.0.reg2mem.0) nounwind ; <i32> [#uses=0] |
| %1 = fadd double %x.0.reg2mem.0, -1.000000e+00 ; <double> [#uses=2] |
| %2 = fcmp olt double %1, 1.000000e+00 ; <i1> [#uses=1] |
| br i1 %2, label %bb, label %return |
| |
| return: |
| ret void |
| ; CHECK-LABEL: @test4( |
| ; CHECK-NOT: cmp |
| ; CHECK: br i1 false |
| } |
| |
| ; PR6761 |
| define void @test5() nounwind { |
| ; <label>:0 |
| br label %1 |
| |
| ; <label>:1 ; preds = %1, %0 |
| %2 = phi double [ 9.000000e+00, %0 ], [ %4, %1 ] ; <double> [#uses=1] |
| %3 = tail call i32 @foo(double 0.0) ; <i32> [#uses=0] |
| %4 = fadd double %2, -1.000000e+00 ; <double> [#uses=2] |
| %5 = fcmp ult double %4, 0.000000e+00 ; <i1> [#uses=1] |
| br i1 %5, label %exit, label %1 |
| |
| exit: |
| ret void |
| |
| ; CHECK-LABEL: @test5( |
| ; CHECK: icmp slt i32 {{.*}}, 0 |
| ; CHECK-NEXT: br i1 |
| } |