llvm-project/llvm/test/Transforms/InstCombine/2008-04-29-VolatileLoadMerg...

; RUN: opt < %s -instcombine -S | grep "load volatile" | count 2
; PR2262
target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
target triple = "i386-apple-darwin8"
@g_1 = internal global i32 0		; <i32*> [#uses=3]

define i32 @main(i32 %i) nounwind  {
entry:
	%tmp93 = icmp slt i32 %i, 10		; <i1> [#uses=0]
	%tmp34 = load volatile i32, i32* @g_1, align 4		; <i32> [#uses=1]
	br i1 %tmp93, label %bb11, label %bb

bb:		; preds = %bb, %entry
	%tmp3 = load volatile i32, i32* @g_1, align 4		; <i32> [#uses=1]
	br label %bb11

bb11:		; preds = %bb
	%tmp4 = phi i32 [ %tmp34, %entry ], [ %tmp3, %bb ]		; <i32> [#uses=1]
	ret i32 %tmp4
}
Convert all tests using TCL-style quoting to use shell-style quoting. This was done through the aid of a terrible Perl creation. I will not paste any of the horrors here. Suffice to say, it require multiple staged rounds of replacements, state carried between, and a few nested-construct-parsing hacks that I'm not proud of. It happens, by luck, to be able to deal with all the TCL-quoting patterns in evidence in the LLVM test suite. If anyone is maintaining large out-of-tree test trees, feel free to poke me and I'll send you the steps I used to convert things, as well as answer any painful questions etc. IRC works best for this type of thing I find. Once converted, switch the LLVM lit config to use ShTests the same as Clang. In addition to being able to delete large amounts of Python code from 'lit', this will also simplify the entire test suite and some of lit's architecture. Finally, the test suite runs 33% faster on Linux now. ;] For my 16-hardware-thread (2x 4-core xeon e5520): 36s -> 24s llvm-svn: 159525 2012-07-02 20:47:22 +08:00			`; RUN: opt < %s -instcombine -S \| grep "load volatile" \| count 2`
fix a subtle volatile handling bug. llvm-svn: 50428 2008-04-30 01:13:43 +08:00			`; PR2262`
			`target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"`
			`target triple = "i386-apple-darwin8"`
			`@g_1 = internal global i32 0 ; <i32*> [#uses=3]`

make this test reduced and valid llvm-svn: 50429 2008-04-30 01:25:32 +08:00			`define i32 @main(i32 %i) nounwind {`
fix a subtle volatile handling bug. llvm-svn: 50428 2008-04-30 01:13:43 +08:00			`entry:`
make this test reduced and valid llvm-svn: 50429 2008-04-30 01:25:32 +08:00			`%tmp93 = icmp slt i32 %i, 10 ; <i1> [#uses=0]`
[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"((?:=\|:\|^)\sload (?: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			`%tmp34 = load volatile i32, i32* @g_1, align 4 ; <i32> [#uses=1]`
make this test reduced and valid llvm-svn: 50429 2008-04-30 01:25:32 +08:00			`br i1 %tmp93, label %bb11, label %bb`
fix a subtle volatile handling bug. llvm-svn: 50428 2008-04-30 01:13:43 +08:00
			`bb: ; preds = %bb, %entry`
[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"((?:=\|:\|^)\sload (?: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			`%tmp3 = load volatile i32, i32* @g_1, align 4 ; <i32> [#uses=1]`
make this test reduced and valid llvm-svn: 50429 2008-04-30 01:25:32 +08:00			`br label %bb11`
fix a subtle volatile handling bug. llvm-svn: 50428 2008-04-30 01:13:43 +08:00
			`bb11: ; preds = %bb`
make this test reduced and valid llvm-svn: 50429 2008-04-30 01:25:32 +08:00			`%tmp4 = phi i32 [ %tmp34, %entry ], [ %tmp3, %bb ] ; <i32> [#uses=1]`
			`ret i32 %tmp4`
fix a subtle volatile handling bug. llvm-svn: 50428 2008-04-30 01:13:43 +08:00			`}`