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llvm-project/llvm/test/CodeGen/X86/remat-scalar-zero.ll

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Turn on list-ilp scheduling by default on x86 and x86-64, fix up testcases accordingly. Some are currently xfailed and will be filed as bugs to be fixed or understood. Performance results: roughly neutral on SPEC some micro benchmarks in the llvm suite are up between 100 and 150%, only a pair of regressions that are due to be investigated john-the-ripper saw: 10% improvement in traditional DES 8% improvement in BSDI DES 59% improvement in FreeBSD MD5 67% improvement in OpenBSD Blowfish 14% improvement in LM DES Small compile time impact. llvm-svn: 127208
2011-03-08 10:42:25 +08:00
; XFAIL: *
misched: tag a few XFAILs that I plan to fix llvm-svn: 153222
2012-03-22 06:31:31 +08:00
; ...should pass. See PR12324: misched bringup
Add support for rematerializing FsFLD0SS and FsFLD0SD as constant-pool loads in order to reduce register pressure. llvm-svn: 82470
2009-09-22 02:30:38 +08:00
; RUN: llc < %s -mtriple=x86_64-unknown-linux-gnu > %t
; RUN: not grep xor %t
; RUN: not grep movap %t
Fix the remaining TCL-style quotes found in the testsuite. This is another mechanical change accomplished though the power of terrible Perl scripts. I have manually switched some "s to 's to make escaping simpler. While I started this to fix tests that aren't run in all configurations, the massive number of tests is due to a really frustrating fragility of our testing infrastructure: things like 'grep -v', 'not grep', and 'expected failures' can mask broken tests all too easily. Essentially, I'm deeply disturbed that I can change the testsuite so radically without causing any change in results for most platforms. =/ llvm-svn: 159547
2012-07-03 03:09:46 +08:00
; RUN: grep "\.quad.*0" %t
Add support for rematerializing FsFLD0SS and FsFLD0SD as constant-pool loads in order to reduce register pressure. llvm-svn: 82470
2009-09-22 02:30:38 +08:00
; Remat should be able to fold the zero constant into the div instructions
; as a constant-pool load.
define void @foo(double* nocapture %x, double* nocapture %y) nounwind {
entry:
%tmp1 = load double* %x ; <double> [#uses=1]
%arrayidx4 = getelementptr inbounds double* %x, i64 1 ; <double*> [#uses=1]
%tmp5 = load double* %arrayidx4 ; <double> [#uses=1]
%arrayidx8 = getelementptr inbounds double* %x, i64 2 ; <double*> [#uses=1]
%tmp9 = load double* %arrayidx8 ; <double> [#uses=1]
%arrayidx12 = getelementptr inbounds double* %x, i64 3 ; <double*> [#uses=1]
%tmp13 = load double* %arrayidx12 ; <double> [#uses=1]
%arrayidx16 = getelementptr inbounds double* %x, i64 4 ; <double*> [#uses=1]
%tmp17 = load double* %arrayidx16 ; <double> [#uses=1]
%arrayidx20 = getelementptr inbounds double* %x, i64 5 ; <double*> [#uses=1]
%tmp21 = load double* %arrayidx20 ; <double> [#uses=1]
%arrayidx24 = getelementptr inbounds double* %x, i64 6 ; <double*> [#uses=1]
%tmp25 = load double* %arrayidx24 ; <double> [#uses=1]
%arrayidx28 = getelementptr inbounds double* %x, i64 7 ; <double*> [#uses=1]
%tmp29 = load double* %arrayidx28 ; <double> [#uses=1]
%arrayidx32 = getelementptr inbounds double* %x, i64 8 ; <double*> [#uses=1]
%tmp33 = load double* %arrayidx32 ; <double> [#uses=1]
%arrayidx36 = getelementptr inbounds double* %x, i64 9 ; <double*> [#uses=1]
%tmp37 = load double* %arrayidx36 ; <double> [#uses=1]
%arrayidx40 = getelementptr inbounds double* %x, i64 10 ; <double*> [#uses=1]
%tmp41 = load double* %arrayidx40 ; <double> [#uses=1]
%arrayidx44 = getelementptr inbounds double* %x, i64 11 ; <double*> [#uses=1]
%tmp45 = load double* %arrayidx44 ; <double> [#uses=1]
%arrayidx48 = getelementptr inbounds double* %x, i64 12 ; <double*> [#uses=1]
%tmp49 = load double* %arrayidx48 ; <double> [#uses=1]
%arrayidx52 = getelementptr inbounds double* %x, i64 13 ; <double*> [#uses=1]
%tmp53 = load double* %arrayidx52 ; <double> [#uses=1]
%arrayidx56 = getelementptr inbounds double* %x, i64 14 ; <double*> [#uses=1]
%tmp57 = load double* %arrayidx56 ; <double> [#uses=1]
%arrayidx60 = getelementptr inbounds double* %x, i64 15 ; <double*> [#uses=1]
%tmp61 = load double* %arrayidx60 ; <double> [#uses=1]
%arrayidx64 = getelementptr inbounds double* %x, i64 16 ; <double*> [#uses=1]
%tmp65 = load double* %arrayidx64 ; <double> [#uses=1]
%div = fdiv double %tmp1, 0.000000e+00 ; <double> [#uses=1]
store double %div, double* %y
%div70 = fdiv double %tmp5, 2.000000e-01 ; <double> [#uses=1]
%arrayidx72 = getelementptr inbounds double* %y, i64 1 ; <double*> [#uses=1]
store double %div70, double* %arrayidx72
%div74 = fdiv double %tmp9, 2.000000e-01 ; <double> [#uses=1]
%arrayidx76 = getelementptr inbounds double* %y, i64 2 ; <double*> [#uses=1]
store double %div74, double* %arrayidx76
%div78 = fdiv double %tmp13, 2.000000e-01 ; <double> [#uses=1]
%arrayidx80 = getelementptr inbounds double* %y, i64 3 ; <double*> [#uses=1]
store double %div78, double* %arrayidx80
%div82 = fdiv double %tmp17, 2.000000e-01 ; <double> [#uses=1]
%arrayidx84 = getelementptr inbounds double* %y, i64 4 ; <double*> [#uses=1]
store double %div82, double* %arrayidx84
%div86 = fdiv double %tmp21, 2.000000e-01 ; <double> [#uses=1]
%arrayidx88 = getelementptr inbounds double* %y, i64 5 ; <double*> [#uses=1]
store double %div86, double* %arrayidx88
%div90 = fdiv double %tmp25, 2.000000e-01 ; <double> [#uses=1]
%arrayidx92 = getelementptr inbounds double* %y, i64 6 ; <double*> [#uses=1]
store double %div90, double* %arrayidx92
%div94 = fdiv double %tmp29, 2.000000e-01 ; <double> [#uses=1]
%arrayidx96 = getelementptr inbounds double* %y, i64 7 ; <double*> [#uses=1]
store double %div94, double* %arrayidx96
%div98 = fdiv double %tmp33, 2.000000e-01 ; <double> [#uses=1]
%arrayidx100 = getelementptr inbounds double* %y, i64 8 ; <double*> [#uses=1]
store double %div98, double* %arrayidx100
%div102 = fdiv double %tmp37, 2.000000e-01 ; <double> [#uses=1]
%arrayidx104 = getelementptr inbounds double* %y, i64 9 ; <double*> [#uses=1]
store double %div102, double* %arrayidx104
%div106 = fdiv double %tmp41, 2.000000e-01 ; <double> [#uses=1]
%arrayidx108 = getelementptr inbounds double* %y, i64 10 ; <double*> [#uses=1]
store double %div106, double* %arrayidx108
%div110 = fdiv double %tmp45, 2.000000e-01 ; <double> [#uses=1]
%arrayidx112 = getelementptr inbounds double* %y, i64 11 ; <double*> [#uses=1]
store double %div110, double* %arrayidx112
%div114 = fdiv double %tmp49, 2.000000e-01 ; <double> [#uses=1]
%arrayidx116 = getelementptr inbounds double* %y, i64 12 ; <double*> [#uses=1]
store double %div114, double* %arrayidx116
%div118 = fdiv double %tmp53, 2.000000e-01 ; <double> [#uses=1]
%arrayidx120 = getelementptr inbounds double* %y, i64 13 ; <double*> [#uses=1]
store double %div118, double* %arrayidx120
%div122 = fdiv double %tmp57, 2.000000e-01 ; <double> [#uses=1]
%arrayidx124 = getelementptr inbounds double* %y, i64 14 ; <double*> [#uses=1]
store double %div122, double* %arrayidx124
%div126 = fdiv double %tmp61, 2.000000e-01 ; <double> [#uses=1]
%arrayidx128 = getelementptr inbounds double* %y, i64 15 ; <double*> [#uses=1]
store double %div126, double* %arrayidx128
%div130 = fdiv double %tmp65, 0.000000e+00 ; <double> [#uses=1]
%arrayidx132 = getelementptr inbounds double* %y, i64 16 ; <double*> [#uses=1]
store double %div130, double* %arrayidx132
ret void
}