diff options
author | Hal Finkel <hfinkel@anl.gov> | 2015-02-07 07:32:58 +0000 |
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committer | Hal Finkel <hfinkel@anl.gov> | 2015-02-07 07:32:58 +0000 |
commit | 05bd43dc6e1038bde5320bbdbe89ca3c8acb3801 (patch) | |
tree | 517e7cf4d3dee42cc56ce5bcf4401ea25551daa4 /test/CodeGen/PowerPC/preincprep-invoke.ll | |
parent | 8143b4da3f8df2506d768f2833a2888545489853 (diff) |
[PowerPC] Handle loop predecessor invokes
If a loop predecessor has an invoke as its terminator, and the return value
from that invoke is used to determine the loop iteration space, then we can't
insert a computation based on that value in the loop predecessor prior to the
terminator (oops). If there's such an invoke, or just no predecessor for that
matter, insert a new loop preheader.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@228488 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/PowerPC/preincprep-invoke.ll')
-rw-r--r-- | test/CodeGen/PowerPC/preincprep-invoke.ll | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/test/CodeGen/PowerPC/preincprep-invoke.ll b/test/CodeGen/PowerPC/preincprep-invoke.ll new file mode 100644 index 00000000000..473b7d06da7 --- /dev/null +++ b/test/CodeGen/PowerPC/preincprep-invoke.ll @@ -0,0 +1,50 @@ +; RUN: llc -mcpu=pwr7 < %s | FileCheck %s +target datalayout = "E-m:e-i64:64-n32:64" +target triple = "powerpc64-unknown-linux-gnu" + +@.str1 = external unnamed_addr constant [1 x i8], align 1 +@.str2 = external unnamed_addr constant [39 x i8], align 1 + +declare void @_ZN13CStdOutStreamlsEPKc() + +declare void @_ZN13CStdOutStream5FlushEv() + +declare i32 @__gxx_personality_v0(...) + +define void @_Z11GetPasswordP13CStdOutStreamb() { +entry: + br label %for.cond.i.i + +for.cond.i.i: ; preds = %for.cond.i.i, %entry + br i1 undef, label %_ZN11CStringBaseIcEC2EPKc.exit.critedge, label %for.cond.i.i + +_ZN11CStringBaseIcEC2EPKc.exit.critedge: ; preds = %for.cond.i.i + invoke void @_ZN13CStdOutStreamlsEPKc() + to label %invoke.cont unwind label %lpad + +invoke.cont: ; preds = %_ZN11CStringBaseIcEC2EPKc.exit.critedge + invoke void @_ZN13CStdOutStream5FlushEv() + to label %invoke.cont4 unwind label %lpad + +invoke.cont4: ; preds = %invoke.cont + %call7 = invoke i8* @getpass() + to label %for.cond.i.i30 unwind label %lpad + +; CHECK-LABEL: @_Z11GetPasswordP13CStdOutStreamb +; CHECK: addi {{[0-9]+}}, 3, -1 + +for.cond.i.i30: ; preds = %for.cond.i.i30, %invoke.cont4 + %indvars.iv.i.i26 = phi i64 [ %indvars.iv.next.i.i29, %for.cond.i.i30 ], [ 0, %invoke.cont4 ] + %arrayidx.i.i27 = getelementptr inbounds i8* %call7, i64 %indvars.iv.i.i26 + %0 = load i8* %arrayidx.i.i27, align 1 + %indvars.iv.next.i.i29 = add nuw nsw i64 %indvars.iv.i.i26, 1 + br label %for.cond.i.i30 + +lpad: ; preds = %invoke.cont4, %invoke.cont, %_ZN11CStringBaseIcEC2EPKc.exit.critedge + %1 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) + cleanup + resume { i8*, i32 } undef +} + +declare i8* @getpass() + |