author | Bill Schmidt <wschmidt@linux.vnet.ibm.com> | |
Tue, 24 Jun 2014 20:05:18 +0000 (20:05 +0000) | ||
committer | Bill Schmidt <wschmidt@linux.vnet.ibm.com> | |
Tue, 24 Jun 2014 20:05:18 +0000 (20:05 +0000) | ||
commit | 808d878a968257a4a010ce2cd563f552dcf91147 | |
tree | f4f1d68f6f88ec3fe640d3c332f05b2b2b1f236a | tree | snapshot (tar.xz tar.gz zip) |
parent | 031ad1b930104d89494c7d76e20bfabc6901fabf | commit | diff |
[PPC64] Fix PR20071 (fctiduz generated for targets lacking that instruction)
PR20071 identifies a problem in PowerPC's fast-isel implementation for
floating-point conversion to integer. The fctiduz instruction was added in
Power ISA 2.06 (i.e., Power7 and later). However, this instruction is being
generated regardless of which 64-bit PowerPC target is selected.
The intent is for fast-isel to punt to DAG selection when this instruction is
not available. This patch implements that change. For testing purposes, the
existing fast-isel-conversion.ll test adds a RUN line for -mcpu=970 and tests
for the expected code generation. Additionally, the existing test
fast-isel-conversion-p5.ll was found to be incorrectly expecting the
unavailable instruction to be generated. I've removed these test variants
since we have adequate coverage in fast-isel-conversion.ll.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211627 91177308-0d34-0410-b5e6-96231b3b80d8
PR20071 identifies a problem in PowerPC's fast-isel implementation for
floating-point conversion to integer. The fctiduz instruction was added in
Power ISA 2.06 (i.e., Power7 and later). However, this instruction is being
generated regardless of which 64-bit PowerPC target is selected.
The intent is for fast-isel to punt to DAG selection when this instruction is
not available. This patch implements that change. For testing purposes, the
existing fast-isel-conversion.ll test adds a RUN line for -mcpu=970 and tests
for the expected code generation. Additionally, the existing test
fast-isel-conversion-p5.ll was found to be incorrectly expecting the
unavailable instruction to be generated. I've removed these test variants
since we have adequate coverage in fast-isel-conversion.ll.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211627 91177308-0d34-0410-b5e6-96231b3b80d8
lib/Target/PowerPC/PPCFastISel.cpp | diff | blob | history | |
test/CodeGen/PowerPC/fast-isel-conversion-p5.ll | diff | blob | history | |
test/CodeGen/PowerPC/fast-isel-conversion.ll | diff | blob | history |