llvm/test/CodeGen/X86/2008-02-18-TailMergingBug.ll
David Blaikie 32b845d223 [opaque pointer type] Add textual IR support for explicit type parameter to the call instruction
See r230786 and r230794 for similar changes to gep and load
respectively.

Call is a bit different because it often doesn't have a single explicit
type - usually the type is deduced from the arguments, and just the
return type is explicit. In those cases there's no need to change the
IR.

When that's not the case, the IR usually contains the pointer type of
the first operand - but since typed pointers are going away, that
representation is insufficient so I'm just stripping the "pointerness"
of the explicit type away.

This does make the IR a bit weird - it /sort of/ reads like the type of
the first operand: "call void () %x(" but %x is actually of type "void
()*" and will eventually be just of type "ptr". But this seems not too
bad and I don't think it would benefit from repeating the type
("void (), void () * %x(" and then eventually "void (), ptr %x(") as has
been done with gep and load.

This also has a side benefit: since the explicit type is no longer a
pointer, there's no ambiguity between an explicit type and a function
that returns a function pointer. Previously this case needed an explicit
type (eg: a function returning a void() function was written as
"call void () () * @x(" rather than "call void () * @x(" because of the
ambiguity between a function returning a pointer to a void() function
and a function returning void).

No ambiguity means even function pointer return types can just be
written alone, without writing the whole function's type.

This leaves /only/ the varargs case where the explicit type is required.

Given the special type syntax in call instructions, the regex-fu used
for migration was a bit more involved in its own unique way (as every
one of these is) so here it is. Use it in conjunction with the apply.sh
script and associated find/xargs commands I've provided in rr230786 to
migrate your out of tree tests. Do let me know if any of this doesn't
cover your cases & we can iterate on a more general script/regexes to
help others with out of tree tests.

About 9 test cases couldn't be automatically migrated - half of those
were functions returning function pointers, where I just had to manually
delete the function argument types now that we didn't need an explicit
function type there. The other half were typedefs of function types used
in calls - just had to manually drop the * from those.

import fileinput
import sys
import re

pat = re.compile(r'((?:=|:|^|\s)call\s(?:[^@]*?))(\s*$|\s*(?:(?:\[\[[a-zA-Z0-9_]+\]\]|[@%](?:(")?[\\\?@a-zA-Z0-9_.]*?(?(3)"|)|{{.*}}))(?:\(|$)|undef|inttoptr|bitcast|null|asm).*$)')
addrspace_end = re.compile(r"addrspace\(\d+\)\s*\*$")
func_end = re.compile("(?:void.*|\)\s*)\*$")

def conv(match, line):
  if not match or re.search(addrspace_end, match.group(1)) or not re.search(func_end, match.group(1)):
    return line
  return line[:match.start()] + match.group(1)[:match.group(1).rfind('*')].rstrip() + match.group(2) + line[match.end():]

for line in sys.stdin:
  sys.stdout.write(conv(re.search(pat, line), line))

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235145 91177308-0d34-0410-b5e6-96231b3b80d8
2015-04-16 23:24:18 +00:00

221 lines
9.1 KiB
LLVM

; REQUIRES: asserts
; RUN: llc < %s -march=x86 -mcpu=yonah -stats 2>&1 | grep "Number of block tails merged" | grep 16
; PR1909
@.str = internal constant [48 x i8] c"transformed bounds: (%.2f, %.2f), (%.2f, %.2f)\0A\00" ; <[48 x i8]*> [#uses=1]
define void @minmax(float* %result) nounwind optsize {
entry:
%tmp2 = load float, float* %result, align 4 ; <float> [#uses=6]
%tmp4 = getelementptr float, float* %result, i32 2 ; <float*> [#uses=5]
%tmp5 = load float, float* %tmp4, align 4 ; <float> [#uses=10]
%tmp7 = getelementptr float, float* %result, i32 4 ; <float*> [#uses=5]
%tmp8 = load float, float* %tmp7, align 4 ; <float> [#uses=8]
%tmp10 = getelementptr float, float* %result, i32 6 ; <float*> [#uses=3]
%tmp11 = load float, float* %tmp10, align 4 ; <float> [#uses=8]
%tmp12 = fcmp olt float %tmp8, %tmp11 ; <i1> [#uses=5]
br i1 %tmp12, label %bb, label %bb21
bb: ; preds = %entry
%tmp23469 = fcmp olt float %tmp5, %tmp8 ; <i1> [#uses=1]
br i1 %tmp23469, label %bb26, label %bb30
bb21: ; preds = %entry
%tmp23 = fcmp olt float %tmp5, %tmp11 ; <i1> [#uses=1]
br i1 %tmp23, label %bb26, label %bb30
bb26: ; preds = %bb21, %bb
%tmp52471 = fcmp olt float %tmp2, %tmp5 ; <i1> [#uses=1]
br i1 %tmp52471, label %bb111, label %bb59
bb30: ; preds = %bb21, %bb
br i1 %tmp12, label %bb40, label %bb50
bb40: ; preds = %bb30
%tmp52473 = fcmp olt float %tmp2, %tmp8 ; <i1> [#uses=1]
br i1 %tmp52473, label %bb111, label %bb59
bb50: ; preds = %bb30
%tmp52 = fcmp olt float %tmp2, %tmp11 ; <i1> [#uses=1]
br i1 %tmp52, label %bb111, label %bb59
bb59: ; preds = %bb50, %bb40, %bb26
br i1 %tmp12, label %bb72, label %bb80
bb72: ; preds = %bb59
%tmp82475 = fcmp olt float %tmp5, %tmp8 ; <i1> [#uses=2]
%brmerge786 = or i1 %tmp82475, %tmp12 ; <i1> [#uses=1]
%tmp4.mux787 = select i1 %tmp82475, float* %tmp4, float* %tmp7 ; <float*> [#uses=1]
br i1 %brmerge786, label %bb111, label %bb103
bb80: ; preds = %bb59
%tmp82 = fcmp olt float %tmp5, %tmp11 ; <i1> [#uses=2]
%brmerge = or i1 %tmp82, %tmp12 ; <i1> [#uses=1]
%tmp4.mux = select i1 %tmp82, float* %tmp4, float* %tmp7 ; <float*> [#uses=1]
br i1 %brmerge, label %bb111, label %bb103
bb103: ; preds = %bb80, %bb72
br label %bb111
bb111: ; preds = %bb103, %bb80, %bb72, %bb50, %bb40, %bb26
%iftmp.0.0.in = phi float* [ %tmp10, %bb103 ], [ %result, %bb26 ], [ %result, %bb40 ], [ %result, %bb50 ], [ %tmp4.mux, %bb80 ], [ %tmp4.mux787, %bb72 ] ; <float*> [#uses=1]
%iftmp.0.0 = load float, float* %iftmp.0.0.in ; <float> [#uses=1]
%tmp125 = fcmp ogt float %tmp8, %tmp11 ; <i1> [#uses=5]
br i1 %tmp125, label %bb128, label %bb136
bb128: ; preds = %bb111
%tmp138477 = fcmp ogt float %tmp5, %tmp8 ; <i1> [#uses=1]
br i1 %tmp138477, label %bb141, label %bb145
bb136: ; preds = %bb111
%tmp138 = fcmp ogt float %tmp5, %tmp11 ; <i1> [#uses=1]
br i1 %tmp138, label %bb141, label %bb145
bb141: ; preds = %bb136, %bb128
%tmp167479 = fcmp ogt float %tmp2, %tmp5 ; <i1> [#uses=1]
br i1 %tmp167479, label %bb226, label %bb174
bb145: ; preds = %bb136, %bb128
br i1 %tmp125, label %bb155, label %bb165
bb155: ; preds = %bb145
%tmp167481 = fcmp ogt float %tmp2, %tmp8 ; <i1> [#uses=1]
br i1 %tmp167481, label %bb226, label %bb174
bb165: ; preds = %bb145
%tmp167 = fcmp ogt float %tmp2, %tmp11 ; <i1> [#uses=1]
br i1 %tmp167, label %bb226, label %bb174
bb174: ; preds = %bb165, %bb155, %bb141
br i1 %tmp125, label %bb187, label %bb195
bb187: ; preds = %bb174
%tmp197483 = fcmp ogt float %tmp5, %tmp8 ; <i1> [#uses=2]
%brmerge790 = or i1 %tmp197483, %tmp125 ; <i1> [#uses=1]
%tmp4.mux791 = select i1 %tmp197483, float* %tmp4, float* %tmp7 ; <float*> [#uses=1]
br i1 %brmerge790, label %bb226, label %bb218
bb195: ; preds = %bb174
%tmp197 = fcmp ogt float %tmp5, %tmp11 ; <i1> [#uses=2]
%brmerge788 = or i1 %tmp197, %tmp125 ; <i1> [#uses=1]
%tmp4.mux789 = select i1 %tmp197, float* %tmp4, float* %tmp7 ; <float*> [#uses=1]
br i1 %brmerge788, label %bb226, label %bb218
bb218: ; preds = %bb195, %bb187
br label %bb226
bb226: ; preds = %bb218, %bb195, %bb187, %bb165, %bb155, %bb141
%iftmp.7.0.in = phi float* [ %tmp10, %bb218 ], [ %result, %bb141 ], [ %result, %bb155 ], [ %result, %bb165 ], [ %tmp4.mux789, %bb195 ], [ %tmp4.mux791, %bb187 ] ; <float*> [#uses=1]
%iftmp.7.0 = load float, float* %iftmp.7.0.in ; <float> [#uses=1]
%tmp229 = getelementptr float, float* %result, i32 1 ; <float*> [#uses=7]
%tmp230 = load float, float* %tmp229, align 4 ; <float> [#uses=6]
%tmp232 = getelementptr float, float* %result, i32 3 ; <float*> [#uses=5]
%tmp233 = load float, float* %tmp232, align 4 ; <float> [#uses=10]
%tmp235 = getelementptr float, float* %result, i32 5 ; <float*> [#uses=5]
%tmp236 = load float, float* %tmp235, align 4 ; <float> [#uses=8]
%tmp238 = getelementptr float, float* %result, i32 7 ; <float*> [#uses=3]
%tmp239 = load float, float* %tmp238, align 4 ; <float> [#uses=8]
%tmp240 = fcmp olt float %tmp236, %tmp239 ; <i1> [#uses=5]
br i1 %tmp240, label %bb243, label %bb251
bb243: ; preds = %bb226
%tmp253485 = fcmp olt float %tmp233, %tmp236 ; <i1> [#uses=1]
br i1 %tmp253485, label %bb256, label %bb260
bb251: ; preds = %bb226
%tmp253 = fcmp olt float %tmp233, %tmp239 ; <i1> [#uses=1]
br i1 %tmp253, label %bb256, label %bb260
bb256: ; preds = %bb251, %bb243
%tmp282487 = fcmp olt float %tmp230, %tmp233 ; <i1> [#uses=1]
br i1 %tmp282487, label %bb341, label %bb289
bb260: ; preds = %bb251, %bb243
br i1 %tmp240, label %bb270, label %bb280
bb270: ; preds = %bb260
%tmp282489 = fcmp olt float %tmp230, %tmp236 ; <i1> [#uses=1]
br i1 %tmp282489, label %bb341, label %bb289
bb280: ; preds = %bb260
%tmp282 = fcmp olt float %tmp230, %tmp239 ; <i1> [#uses=1]
br i1 %tmp282, label %bb341, label %bb289
bb289: ; preds = %bb280, %bb270, %bb256
br i1 %tmp240, label %bb302, label %bb310
bb302: ; preds = %bb289
%tmp312491 = fcmp olt float %tmp233, %tmp236 ; <i1> [#uses=2]
%brmerge793 = or i1 %tmp312491, %tmp240 ; <i1> [#uses=1]
%tmp232.mux794 = select i1 %tmp312491, float* %tmp232, float* %tmp235 ; <float*> [#uses=1]
br i1 %brmerge793, label %bb341, label %bb333
bb310: ; preds = %bb289
%tmp312 = fcmp olt float %tmp233, %tmp239 ; <i1> [#uses=2]
%brmerge792 = or i1 %tmp312, %tmp240 ; <i1> [#uses=1]
%tmp232.mux = select i1 %tmp312, float* %tmp232, float* %tmp235 ; <float*> [#uses=1]
br i1 %brmerge792, label %bb341, label %bb333
bb333: ; preds = %bb310, %bb302
br label %bb341
bb341: ; preds = %bb333, %bb310, %bb302, %bb280, %bb270, %bb256
%iftmp.14.0.in = phi float* [ %tmp238, %bb333 ], [ %tmp229, %bb280 ], [ %tmp229, %bb270 ], [ %tmp229, %bb256 ], [ %tmp232.mux, %bb310 ], [ %tmp232.mux794, %bb302 ] ; <float*> [#uses=1]
%iftmp.14.0 = load float, float* %iftmp.14.0.in ; <float> [#uses=1]
%tmp355 = fcmp ogt float %tmp236, %tmp239 ; <i1> [#uses=5]
br i1 %tmp355, label %bb358, label %bb366
bb358: ; preds = %bb341
%tmp368493 = fcmp ogt float %tmp233, %tmp236 ; <i1> [#uses=1]
br i1 %tmp368493, label %bb371, label %bb375
bb366: ; preds = %bb341
%tmp368 = fcmp ogt float %tmp233, %tmp239 ; <i1> [#uses=1]
br i1 %tmp368, label %bb371, label %bb375
bb371: ; preds = %bb366, %bb358
%tmp397495 = fcmp ogt float %tmp230, %tmp233 ; <i1> [#uses=1]
br i1 %tmp397495, label %bb456, label %bb404
bb375: ; preds = %bb366, %bb358
br i1 %tmp355, label %bb385, label %bb395
bb385: ; preds = %bb375
%tmp397497 = fcmp ogt float %tmp230, %tmp236 ; <i1> [#uses=1]
br i1 %tmp397497, label %bb456, label %bb404
bb395: ; preds = %bb375
%tmp397 = fcmp ogt float %tmp230, %tmp239 ; <i1> [#uses=1]
br i1 %tmp397, label %bb456, label %bb404
bb404: ; preds = %bb395, %bb385, %bb371
br i1 %tmp355, label %bb417, label %bb425
bb417: ; preds = %bb404
%tmp427499 = fcmp ogt float %tmp233, %tmp236 ; <i1> [#uses=2]
%brmerge797 = or i1 %tmp427499, %tmp355 ; <i1> [#uses=1]
%tmp232.mux798 = select i1 %tmp427499, float* %tmp232, float* %tmp235 ; <float*> [#uses=1]
br i1 %brmerge797, label %bb456, label %bb448
bb425: ; preds = %bb404
%tmp427 = fcmp ogt float %tmp233, %tmp239 ; <i1> [#uses=2]
%brmerge795 = or i1 %tmp427, %tmp355 ; <i1> [#uses=1]
%tmp232.mux796 = select i1 %tmp427, float* %tmp232, float* %tmp235 ; <float*> [#uses=1]
br i1 %brmerge795, label %bb456, label %bb448
bb448: ; preds = %bb425, %bb417
br label %bb456
bb456: ; preds = %bb448, %bb425, %bb417, %bb395, %bb385, %bb371
%iftmp.21.0.in = phi float* [ %tmp238, %bb448 ], [ %tmp229, %bb395 ], [ %tmp229, %bb385 ], [ %tmp229, %bb371 ], [ %tmp232.mux796, %bb425 ], [ %tmp232.mux798, %bb417 ] ; <float*> [#uses=1]
%iftmp.21.0 = load float, float* %iftmp.21.0.in ; <float> [#uses=1]
%tmp458459 = fpext float %iftmp.21.0 to double ; <double> [#uses=1]
%tmp460461 = fpext float %iftmp.7.0 to double ; <double> [#uses=1]
%tmp462463 = fpext float %iftmp.14.0 to double ; <double> [#uses=1]
%tmp464465 = fpext float %iftmp.0.0 to double ; <double> [#uses=1]
%tmp467 = tail call i32 (i8*, ...) @printf( i8* getelementptr ([48 x i8], [48 x i8]* @.str, i32 0, i32 0), double %tmp464465, double %tmp462463, double %tmp460461, double %tmp458459 ) nounwind ; <i32> [#uses=0]
ret void
}
declare i32 @printf(i8*, ...) nounwind