mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2025-01-04 05:31:06 +00:00
54636af39d
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11306 91177308-0d34-0410-b5e6-96231b3b80d8
36 lines
1008 B
LLVM
36 lines
1008 B
LLVM
; Test a bunch of cases where the cfg simplification code should
|
|
; be able to fold PHI nodes into computation in common cases. Folding the PHI
|
|
; nodes away allows the branches to be eliminated, performing a simple form of
|
|
; 'if conversion'.
|
|
|
|
; RUN: llvm-as < %s | opt -simplifycfg | llvm-dis > Output/%s.xform
|
|
; RUN: not grep phi Output/%s.xform && grep ret Output/%s.xform
|
|
|
|
declare void %use(bool)
|
|
declare void %use(int)
|
|
|
|
void %test(bool %c, int %V) {
|
|
br bool %c, label %T, label %F
|
|
T:
|
|
br label %F
|
|
F:
|
|
%B1 = phi bool [true, %0], [false, %T]
|
|
%B2 = phi bool [true, %T], [false, %0]
|
|
%I1 = phi int [1, %T], [0, %0]
|
|
%I2 = phi int [1, %0], [0, %T]
|
|
%I3 = phi int [17, %T], [0, %0]
|
|
%I4 = phi int [17, %T], [5, %0]
|
|
%I5 = phi int [%V, %T], [0, %0]
|
|
%I6 = phi int [%V, %0], [0, %T]
|
|
call void %use(bool %B1)
|
|
call void %use(bool %B2)
|
|
call void %use(int %I1)
|
|
call void %use(int %I2)
|
|
call void %use(int %I3)
|
|
call void %use(int %I4)
|
|
call void %use(int %I5)
|
|
call void %use(int %I6)
|
|
ret void
|
|
}
|
|
|