llvm-6502/test/CodeGen/R600/disconnected-predset-break-bug.ll
Vincent Lejeune 08001a5a15 R600: Add support for native control flow
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178505 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-01 21:48:05 +00:00

30 lines
1.1 KiB
LLVM

; RUN: llc < %s -march=r600 -mcpu=redwood | FileCheck %s
; PRED_SET* instructions must be tied to any instruction that uses their
; result. This tests that there are no instructions between the PRED_SET*
; and the PREDICATE_BREAK in this loop.
; CHECK: @loop_ge
; CHECK: LOOP_START_DX10
; CHECK: PRED_SET
; CHECK-NEXT: JUMP
; CHECK-NEXT: LOOP_BREAK
define void @loop_ge(i32 addrspace(1)* nocapture %out, i32 %iterations) nounwind {
entry:
%cmp5 = icmp sgt i32 %iterations, 0
br i1 %cmp5, label %for.body, label %for.end
for.body: ; preds = %for.body, %entry
%i.07.in = phi i32 [ %i.07, %for.body ], [ %iterations, %entry ]
%ai.06 = phi i32 [ %add, %for.body ], [ 0, %entry ]
%i.07 = add nsw i32 %i.07.in, -1
%arrayidx = getelementptr inbounds i32 addrspace(1)* %out, i32 %ai.06
store i32 %i.07, i32 addrspace(1)* %arrayidx, align 4
%add = add nsw i32 %ai.06, 1
%exitcond = icmp eq i32 %add, %iterations
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body, %entry
ret void
}