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llvm-mirror/test/CodeGen/PowerPC/iabs.ll
Matthias Braun b3a8585bc1 PowerPC: Do not use llc -march in tests.
`llc -march` is problematic because it only switches the target
architecture, but leaves the operating system unchanged. This
occasionally leads to indeterministic tests because the OS from
LLVM_DEFAULT_TARGET_TRIPLE is used.

However we can simply always use `llc -mtriple` instead. This changes
all the tests to do this to avoid people using -march when they copy and
paste parts of tests.

This patch:
- Removes -march if the .ll file already has a matching `target triple`
  directive or -mtriple argument.
- In all other cases changes -march=ppc32/-march=ppc64 to
  -mtriple=ppc32--/-mtriple=ppc64--

See also the discussion in https://reviews.llvm.org/D35287

llvm-svn: 309754
2017-08-01 22:20:41 +00:00

17 lines
460 B
LLVM

; REQUIRES: asserts
; RUN: llc -verify-machineinstrs < %s -mtriple=ppc32-- -stats 2>&1 | \
; RUN: grep "4 .*Number of machine instrs printed"
;; Integer absolute value, should produce something as good as:
;; srawi r2, r3, 31
;; add r3, r3, r2
;; xor r3, r3, r2
;; blr
define i32 @test(i32 %a) {
%tmp1neg = sub i32 0, %a
%b = icmp sgt i32 %a, -1
%abs = select i1 %b, i32 %a, i32 %tmp1neg
ret i32 %abs
}