mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-21 03:29:40 +00:00
3d73bce2d0
could theoretically introduce a trap, but is also a performance issue. This speeds up ptrdist/ks by 8%. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45533 91177308-0d34-0410-b5e6-96231b3b80d8
27 lines
1.0 KiB
LLVM
27 lines
1.0 KiB
LLVM
; The phi should not be eliminated in this case, because the fp op could trap.
|
|
; RUN: llvm-as < %s | opt -simplifycfg | llvm-dis | grep {= phi double}
|
|
|
|
target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
|
|
target triple = "i686-apple-darwin8"
|
|
@G = weak global double 0.000000e+00, align 8 ; <double*> [#uses=2]
|
|
|
|
define void @test(i32 %X, i32 %Y, double %Z) {
|
|
entry:
|
|
%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
|
|
%tmp = load double* @G, align 8 ; <double> [#uses=2]
|
|
%tmp3 = icmp eq i32 %X, %Y ; <i1> [#uses=1]
|
|
%tmp34 = zext i1 %tmp3 to i8 ; <i8> [#uses=1]
|
|
%toBool = icmp ne i8 %tmp34, 0 ; <i1> [#uses=1]
|
|
br i1 %toBool, label %cond_true, label %cond_next
|
|
|
|
cond_true: ; preds = %entry
|
|
%tmp7 = add double %tmp, %Z ; <double> [#uses=1]
|
|
br label %cond_next
|
|
|
|
cond_next: ; preds = %cond_true, %entry
|
|
%F.0 = phi double [ %tmp, %entry ], [ %tmp7, %cond_true ] ; <double> [#uses=1]
|
|
store double %F.0, double* @G, align 8
|
|
ret void
|
|
}
|
|
|