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llvm-project/llvm/test/Transforms/InstCombine/2011-05-28-swapmulsub.ll

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(1 - X) * (-2) -> (x - 1) * 2, for all positive nonzero powers of 2 rdar://problem/6501862 llvm-svn: 132316
2011-05-31 04:00:33 +08:00
; ModuleID = 'test1.c'
; RUN: opt -S -instcombine < %s | FileCheck %s
target triple = "x86_64-apple-macosx10.6.6"
Reapply 132348 with fixes. rdar://problem/6501862 llvm-svn: 132402
2011-06-02 00:42:47 +08:00
define zeroext i16 @foo1(i32 %on_off) nounwind uwtable ssp {
(1 - X) * (-2) -> (x - 1) * 2, for all positive nonzero powers of 2 rdar://problem/6501862 llvm-svn: 132316
2011-05-31 04:00:33 +08:00
entry:
%on_off.addr = alloca i32, align 4
%a = alloca i32, align 4
store i32 %on_off, i32* %on_off.addr, align 4
[opaque pointer type] Add textual IR support for explicit type parameter to load instruction Essentially the same as the GEP change in r230786. A similar migration script can be used to update test cases, though a few more test case improvements/changes were required this time around: (r229269-r229278) import fileinput import sys import re pat = re.compile(r"((?:=|:|^)\s*load (?:atomic )?(?:volatile )?(.*?))(| addrspace\(\d+\) *)\*($| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$)") for line in sys.stdin: sys.stdout.write(re.sub(pat, r"\1, \2\3*\4", line)) Reviewers: rafael, dexonsmith, grosser Differential Revision: http://reviews.llvm.org/D7649 llvm-svn: 230794
2015-02-28 05:17:42 +08:00
%tmp = load i32, i32* %on_off.addr, align 4
(1 - X) * (-2) -> (x - 1) * 2, for all positive nonzero powers of 2 rdar://problem/6501862 llvm-svn: 132316
2011-05-31 04:00:33 +08:00
%sub = sub i32 1, %tmp
Reapply 132348 with fixes. rdar://problem/6501862 llvm-svn: 132402
2011-06-02 00:42:47 +08:00
; CHECK-NOT: mul i32
(1 - X) * (-2) -> (x - 1) * 2, for all positive nonzero powers of 2 rdar://problem/6501862 llvm-svn: 132316
2011-05-31 04:00:33 +08:00
%mul = mul i32 %sub, -2
; CHECK: shl
; CHECK-NEXT: add
store i32 %mul, i32* %a, align 4
[opaque pointer type] Add textual IR support for explicit type parameter to load instruction Essentially the same as the GEP change in r230786. A similar migration script can be used to update test cases, though a few more test case improvements/changes were required this time around: (r229269-r229278) import fileinput import sys import re pat = re.compile(r"((?:=|:|^)\s*load (?:atomic )?(?:volatile )?(.*?))(| addrspace\(\d+\) *)\*($| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$)") for line in sys.stdin: sys.stdout.write(re.sub(pat, r"\1, \2\3*\4", line)) Reviewers: rafael, dexonsmith, grosser Differential Revision: http://reviews.llvm.org/D7649 llvm-svn: 230794
2015-02-28 05:17:42 +08:00
%tmp1 = load i32, i32* %a, align 4
(1 - X) * (-2) -> (x - 1) * 2, for all positive nonzero powers of 2 rdar://problem/6501862 llvm-svn: 132316
2011-05-31 04:00:33 +08:00
%conv = trunc i32 %tmp1 to i16
ret i16 %conv
}
Reapply 132348 with fixes. rdar://problem/6501862 llvm-svn: 132402
2011-06-02 00:42:47 +08:00
define zeroext i16 @foo2(i32 %on_off, i32 %q) nounwind uwtable ssp {
entry:
%on_off.addr = alloca i32, align 4
%q.addr = alloca i32, align 4
%a = alloca i32, align 4
store i32 %on_off, i32* %on_off.addr, align 4
store i32 %q, i32* %q.addr, align 4
[opaque pointer type] Add textual IR support for explicit type parameter to load instruction Essentially the same as the GEP change in r230786. A similar migration script can be used to update test cases, though a few more test case improvements/changes were required this time around: (r229269-r229278) import fileinput import sys import re pat = re.compile(r"((?:=|:|^)\s*load (?:atomic )?(?:volatile )?(.*?))(| addrspace\(\d+\) *)\*($| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$)") for line in sys.stdin: sys.stdout.write(re.sub(pat, r"\1, \2\3*\4", line)) Reviewers: rafael, dexonsmith, grosser Differential Revision: http://reviews.llvm.org/D7649 llvm-svn: 230794
2015-02-28 05:17:42 +08:00
%tmp = load i32, i32* %q.addr, align 4
%tmp1 = load i32, i32* %on_off.addr, align 4
Reapply 132348 with fixes. rdar://problem/6501862 llvm-svn: 132402
2011-06-02 00:42:47 +08:00
%sub = sub i32 %tmp, %tmp1
; CHECK-NOT: mul i32
%mul = mul i32 %sub, -4
; CHECK: sub i32
Revert "Revert "Revert "InstCombine: Reduce trunc (shl x, K) width.""" This seems to be causing an infinite loop / crash in instcombine on some bots. llvm-svn: 273069
2016-06-18 07:36:38 +08:00
; CHECK-NEXT: shl
Reapply 132348 with fixes. rdar://problem/6501862 llvm-svn: 132402
2011-06-02 00:42:47 +08:00
store i32 %mul, i32* %a, align 4
[opaque pointer type] Add textual IR support for explicit type parameter to load instruction Essentially the same as the GEP change in r230786. A similar migration script can be used to update test cases, though a few more test case improvements/changes were required this time around: (r229269-r229278) import fileinput import sys import re pat = re.compile(r"((?:=|:|^)\s*load (?:atomic )?(?:volatile )?(.*?))(| addrspace\(\d+\) *)\*($| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$)") for line in sys.stdin: sys.stdout.write(re.sub(pat, r"\1, \2\3*\4", line)) Reviewers: rafael, dexonsmith, grosser Differential Revision: http://reviews.llvm.org/D7649 llvm-svn: 230794
2015-02-28 05:17:42 +08:00
%tmp2 = load i32, i32* %a, align 4
Reapply 132348 with fixes. rdar://problem/6501862 llvm-svn: 132402
2011-06-02 00:42:47 +08:00
%conv = trunc i32 %tmp2 to i16
ret i16 %conv
}
define zeroext i16 @foo3(i32 %on_off) nounwind uwtable ssp {
entry:
%on_off.addr = alloca i32, align 4
%a = alloca i32, align 4
store i32 %on_off, i32* %on_off.addr, align 4
[opaque pointer type] Add textual IR support for explicit type parameter to load instruction Essentially the same as the GEP change in r230786. A similar migration script can be used to update test cases, though a few more test case improvements/changes were required this time around: (r229269-r229278) import fileinput import sys import re pat = re.compile(r"((?:=|:|^)\s*load (?:atomic )?(?:volatile )?(.*?))(| addrspace\(\d+\) *)\*($| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$)") for line in sys.stdin: sys.stdout.write(re.sub(pat, r"\1, \2\3*\4", line)) Reviewers: rafael, dexonsmith, grosser Differential Revision: http://reviews.llvm.org/D7649 llvm-svn: 230794
2015-02-28 05:17:42 +08:00
%tmp = load i32, i32* %on_off.addr, align 4
Reapply 132348 with fixes. rdar://problem/6501862 llvm-svn: 132402
2011-06-02 00:42:47 +08:00
%sub = sub i32 7, %tmp
; CHECK-NOT: mul i32
%mul = mul i32 %sub, -4
; CHECK: shl
; CHECK-NEXT: add
store i32 %mul, i32* %a, align 4
[opaque pointer type] Add textual IR support for explicit type parameter to load instruction Essentially the same as the GEP change in r230786. A similar migration script can be used to update test cases, though a few more test case improvements/changes were required this time around: (r229269-r229278) import fileinput import sys import re pat = re.compile(r"((?:=|:|^)\s*load (?:atomic )?(?:volatile )?(.*?))(| addrspace\(\d+\) *)\*($| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$)") for line in sys.stdin: sys.stdout.write(re.sub(pat, r"\1, \2\3*\4", line)) Reviewers: rafael, dexonsmith, grosser Differential Revision: http://reviews.llvm.org/D7649 llvm-svn: 230794
2015-02-28 05:17:42 +08:00
%tmp1 = load i32, i32* %a, align 4
Reapply 132348 with fixes. rdar://problem/6501862 llvm-svn: 132402
2011-06-02 00:42:47 +08:00
%conv = trunc i32 %tmp1 to i16
ret i16 %conv
}