llvm-mirror/test/CodeGen/ARM/clz.ll

; RUN: llc -mtriple=arm-eabi -mattr=+v5t %s -o - | FileCheck %s

declare i32 @llvm.ctlz.i32(i32, i1)

define i32 @test(i32 %x) {
; CHECK: test
; CHECK: clz r0, r0
        %tmp.1 = call i32 @llvm.ctlz.i32( i32 %x, i1 true )
        ret i32 %tmp.1
}
ARM: fixup more tests to specify the target more explicitly This changes the tests that were targeting ARM EABI to explicitly specify the environment rather than relying on the default. This breaks with the new Windows on ARM support when running the tests on Windows where the default environment is no longer EABI. Take the opportunity to avoid a pointless redirect (helps when trying to debug with providing a command line invocation which can be copy and pasted) and removing a few greps in favour of FileCheck. llvm-svn: 205541 2014-04-03 16:01:44 +00:00			`; RUN: llc -mtriple=arm-eabi -mattr=+v5t %s -o - \| FileCheck %s`
ARM test cases contributed by Apple. llvm-svn: 33354 2007-01-19 09:20:23 +00:00
Manually upgrade the test suite to specify the flag to cttz and ctlz. I followed three heuristics for deciding whether to set 'true' or 'false': - Everything target independent got 'true' as that is the expected common output of the GCC builtins. - If the target arch only has one way of implementing this operation, set the flag in the way that exercises the most of codegen. For most architectures this is also the likely path from a GCC builtin, with 'true' being set. It will (eventually) require lowering away that difference, and then lowering to the architecture's operation. - Otherwise, set the flag differently dependending on which target operation should be tested. Let me know if anyone has any issue with this pattern or would like specific tests of another form. This should allow the x86 codegen to just iteratively improve as I teach the backend how to differentiate between the two forms, and everything else should remain exactly the same. llvm-svn: 146370 2011-12-12 11:59:10 +00:00			`declare i32 @llvm.ctlz.i32(i32, i1)`
ARM test cases contributed by Apple. llvm-svn: 33354 2007-01-19 09:20:23 +00:00
Remove llvm-upgrade. llvm-svn: 47238 2008-02-17 20:02:20 +00:00			`define i32 @test(i32 %x) {`
FileCheck-ize a few tests. llvm-svn: 117156 2010-10-22 21:55:03 +00:00			`; CHECK: test`
			`; CHECK: clz r0, r0`
Manually upgrade the test suite to specify the flag to cttz and ctlz. I followed three heuristics for deciding whether to set 'true' or 'false': - Everything target independent got 'true' as that is the expected common output of the GCC builtins. - If the target arch only has one way of implementing this operation, set the flag in the way that exercises the most of codegen. For most architectures this is also the likely path from a GCC builtin, with 'true' being set. It will (eventually) require lowering away that difference, and then lowering to the architecture's operation. - Otherwise, set the flag differently dependending on which target operation should be tested. Let me know if anyone has any issue with this pattern or would like specific tests of another form. This should allow the x86 codegen to just iteratively improve as I teach the backend how to differentiate between the two forms, and everything else should remain exactly the same. llvm-svn: 146370 2011-12-12 11:59:10 +00:00			`%tmp.1 = call i32 @llvm.ctlz.i32( i32 %x, i1 true )`
Remove llvm-upgrade. llvm-svn: 47238 2008-02-17 20:02:20 +00:00			`ret i32 %tmp.1`
ARM test cases contributed by Apple. llvm-svn: 33354 2007-01-19 09:20:23 +00:00			`}`