mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-01 08:23:21 +01:00
3d0c010ee4
strides for now, because it doesn't handle them correctly. This fixes a miscompile of SingleSource/Benchmarks/Misc-C++/ray. This problem was usually hidden because indvars transforms such induction variables into negations of canonical induction variables. llvm-svn: 85118
26 lines
1004 B
LLVM
26 lines
1004 B
LLVM
; RUN: llc < %s -march=x86-64 | grep cvtsi2sd
|
|
|
|
; LSR previously eliminated the sitofp by introducing an induction
|
|
; variable which stepped by a bogus ((double)UINT32_C(-1)). It's theoretically
|
|
; possible to eliminate the sitofp using a proper -1.0 step though; this
|
|
; test should be changed if that is done.
|
|
|
|
define void @foo(i32 %N) nounwind {
|
|
entry:
|
|
%0 = icmp slt i32 %N, 0 ; <i1> [#uses=1]
|
|
br i1 %0, label %bb, label %return
|
|
|
|
bb: ; preds = %bb, %entry
|
|
%i.03 = phi i32 [ 0, %entry ], [ %2, %bb ] ; <i32> [#uses=2]
|
|
%1 = sitofp i32 %i.03 to double ; <double> [#uses=1]
|
|
tail call void @bar(double %1) nounwind
|
|
%2 = add nsw i32 %i.03, -1 ; <i32> [#uses=2]
|
|
%exitcond = icmp eq i32 %2, %N ; <i1> [#uses=1]
|
|
br i1 %exitcond, label %return, label %bb
|
|
|
|
return: ; preds = %bb, %entry
|
|
ret void
|
|
}
|
|
|
|
declare void @bar(double)
|