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llvm-project/llvm/test/CodeGen/ARM/minsize-litpools.ll

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ARM: decide whether to use movw/movt based on "minsize" attribute. llvm-svn: 196102
2013-12-02 22:46:26 +08:00
; RUN: llc -mtriple=thumbv7s %s -o - | FileCheck %s
; RUN: llc -mtriple=armv7s %s -o - | FileCheck %s
; CodeGen should be able to set and reset the MinSize subtarget-feature, and
; make use of it in deciding whether to use MOVW/MOVT for global variables or a
; lit-pool load (saving roughly 2 bytes of code).
@var = global i32 0
define i32 @small_global() minsize {
; CHECK-LABEL: small_global:
; CHECK: ldr r[[GLOBDEST:[0-9]+]], {{.?LCPI0_0}}
; CHECK: ldr r0, [r[[GLOBDEST]]]
[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
%val = load i32, i32* @var
ARM: decide whether to use movw/movt based on "minsize" attribute. llvm-svn: 196102
2013-12-02 22:46:26 +08:00
ret i32 %val
}
define i32 @big_global() {
; CHECK-LABEL: big_global:
; CHECK: movw [[GLOBDEST:r[0-9]+]], :lower16:var
; CHECK: movt [[GLOBDEST]], :upper16:var
[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
%val = load i32, i32* @var
ARM: decide whether to use movw/movt based on "minsize" attribute. llvm-svn: 196102
2013-12-02 22:46:26 +08:00
ret i32 %val
}