Files
clang-p2996/llvm/test/CodeGen/PowerPC/fnabs.ll
Bob Wilson 874886cd66 Refactor and check "onlyReadsMemory" before optimizing builtins.
This patch is mostly just refactoring a bunch of copy-and-pasted code, but
it also adds a check that the call instructions are readnone or readonly.
That check was already present for sin, cos, sqrt, log2, and exp2 calls, but
it was missing for the rest of the builtins being handled in this code.

llvm-svn: 161282
2012-08-03 23:29:17 +00:00

11 lines
287 B
LLVM

; RUN: llc < %s -march=ppc32 | grep fnabs
declare double @fabs(double)
define double @test(double %X) {
%Y = call double @fabs( double %X ) readnone ; <double> [#uses=1]
%Z = fsub double -0.000000e+00, %Y ; <double> [#uses=1]
ret double %Z
}