3a3bb53835
[X86] Add FPSW as a Def on some FP instructions that were missing it. Pull in r353141 from upstream llvm trunk (by Craig Topper): [X86] Connect the default fpsr and dirflag clobbers in inline assembly to the registers we have defined for them. Summary: We don't currently map these constraints to physical register numbers so they don't make it to the MachineIR representation of inline assembly. This could have problems for proper dependency tracking in the machine schedulers though I don't have a test case that shows that. Reviewers: rnk Reviewed By: rnk Subscribers: eraman, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D57641 Pull in r353489 from upstream llvm trunk (by Craig Topper): [X86] Add FPCW as a register and start using it as an implicit use on floating point instructions. Summary: FPCW contains the rounding mode control which we manipulate to implement fp to integer conversion by changing the roudning mode, storing the value to the stack, and then changing the rounding mode back. Because we didn't model FPCW and its dependency chain, other instructions could be scheduled into the middle of the sequence. This patch introduces the register and adds it as an implciit def of FLDCW and implicit use of the FP binary arithmetic instructions and store instructions. There are more instructions that need to be updated, but this is a good start. I believe this fixes at least the reduced test case from PR40529. Reviewers: RKSimon, spatel, rnk, efriedma, andrew.w.kaylor Subscribers: dim, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D57735 These should fix a problem in clang 7.0 where it would sometimes emit long double floating point instructions in a slightly wrong order, leading to failures in our libm tests. In particular, the cbrt_test test case 'cbrtl_powl' and the trig_test test case 'reduction'. Also bump __FreeBSD_cc_version, to be able to detect this in our test suite. Reported by: lwhsu PR: 234040 Upstream PR: https://bugs.llvm.org/show_bug.cgi?id=40206 MFC after: 1 week
4 lines
53 B
C
4 lines
53 B
C
/* $FreeBSD$ */
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#define FREEBSD_CC_VERSION 1300002
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