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; 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
}
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