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llvm-mirror/test/CodeGen/Hexagon/postinc-load.ll
Matthew Curtis 596e698b79 In hexagon convertToHardwareLoop, don't deref end() iterator
In particular, check if MachineBasicBlock::iterator is end() before
using it to call getDebugLoc();

See also this thread on llvm-commits:
   http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20121112/155914.html

llvm-svn: 169634
2012-12-07 21:03:15 +00:00

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1.0 KiB
LLVM

; RUN: llc -march=hexagon -mcpu=hexagonv4 < %s | FileCheck %s
; Check that post-increment load instructions are being generated.
; CHECK: r{{[0-9]+}}{{ *}}={{ *}}memw(r{{[0-9]+}}{{ *}}++{{ *}}#4{{ *}})
define i32 @sum(i32* nocapture %a, i16* nocapture %b, i32 %n) nounwind {
entry:
br label %for.body
for.body:
%lsr.iv = phi i32 [ %lsr.iv.next, %for.body ], [ 10, %entry ]
%arrayidx.phi = phi i32* [ %a, %entry ], [ %arrayidx.inc, %for.body ]
%arrayidx1.phi = phi i16* [ %b, %entry ], [ %arrayidx1.inc, %for.body ]
%sum.03 = phi i32 [ 0, %entry ], [ %add2, %for.body ]
%0 = load i32* %arrayidx.phi, align 4
%1 = load i16* %arrayidx1.phi, align 2
%conv = sext i16 %1 to i32
%add = add i32 %0, %sum.03
%add2 = add i32 %add, %conv
%arrayidx.inc = getelementptr i32* %arrayidx.phi, i32 1
%arrayidx1.inc = getelementptr i16* %arrayidx1.phi, i32 1
%lsr.iv.next = add i32 %lsr.iv, -1
%exitcond = icmp eq i32 %lsr.iv.next, 0
br i1 %exitcond, label %for.end, label %for.body
for.end:
ret i32 %add2
}