forked from OSchip/llvm-project
50 lines
1.3 KiB
LLVM
50 lines
1.3 KiB
LLVM
|
; RUN: llc < %s -march=x86-64 | FileCheck %s
|
||
|
|
|
||
|
|
; With optimization at O2 we actually get the legalized function optimized
|
||
|
|
; away through legalization and stack coloring, but check that we do all of
|
||
|
|
; that here and don't crash during legalization.
|
||
|
|
|
||
|
|
; Original program:
|
||
|
|
; typedef enum { A, B, C, D } P;
|
||
|
|
; struct { P x[2]; } a;
|
||
|
|
|
||
|
|
; void fn2();
|
||
|
|
; void fn1() {
|
||
|
|
; int b;
|
||
|
|
; unsigned c;
|
||
|
|
; for (;; c++) {
|
||
|
|
; fn2();
|
||
|
|
; unsigned n;
|
||
|
|
; for (; c; c++) {
|
||
|
|
; b = a.x[c] == A || a.x[c] == B || a.x[c] == D;
|
||
|
|
; if (b) n++;
|
||
|
|
; }
|
||
|
|
; if (n)
|
||
|
|
; for (;;)
|
||
|
|
; ;
|
||
|
|
; }
|
||
|
|
; }
|
||
|
|
|
||
|
|
define void @fn1() {
|
||
|
|
; CHECK-LABEL: fn1
|
||
|
|
; CHECK: movb $0, -8(%rsp)
|
||
|
|
; CHECK: cmpq $8, %rax
|
||
|
|
for.cond:
|
||
|
|
br label %vector.body
|
||
|
|
|
||
|
|
vector.body: ; preds = %vector.body, %for.cond
|
||
|
|
%x42 = bitcast <4 x i4> zeroinitializer to i16
|
||
|
|
%x43 = icmp ne i16 %x42, 0
|
||
|
|
%x44 = select i1 %x43, i32 undef, i32 0
|
||
|
|
%x72 = bitcast <4 x i1> zeroinitializer to i4
|
||
|
|
%x73 = icmp ne i4 %x72, 0
|
||
|
|
%x74 = select i1 %x73, i32 %x44, i32 undef
|
||
|
|
%x84 = select i1 undef, i32 undef, i32 %x74
|
||
|
|
%x88 = icmp eq i64 undef, 8
|
||
|
|
br i1 %x88, label %middle.block, label %vector.body
|
||
|
|
|
||
|
|
middle.block: ; preds = %vector.body
|
||
|
|
%0 = select i1 undef, i32 undef, i32 %x84
|
||
|
|
ret void
|
||
|
|
}
|