llvm-6502/test/CodeGen/SystemZ/shift-03.ll
Stephen Lin 8b2b8a1835 Mass update to CodeGen tests to use CHECK-LABEL for labels corresponding to function definitions for more informative error messages. No functionality change and all updated tests passed locally.
This update was done with the following bash script:

  find test/CodeGen -name "*.ll" | \
  while read NAME; do
    echo "$NAME"
    if ! grep -q "^; *RUN: *llc.*debug" $NAME; then
      TEMP=`mktemp -t temp`
      cp $NAME $TEMP
      sed -n "s/^define [^@]*@\([A-Za-z0-9_]*\)(.*$/\1/p" < $NAME | \
      while read FUNC; do
        sed -i '' "s/;\(.*\)\([A-Za-z0-9_-]*\):\( *\)$FUNC: *\$/;\1\2-LABEL:\3$FUNC:/g" $TEMP
      done
      sed -i '' "s/;\(.*\)-LABEL-LABEL:/;\1-LABEL:/" $TEMP
      sed -i '' "s/;\(.*\)-NEXT-LABEL:/;\1-NEXT:/" $TEMP
      sed -i '' "s/;\(.*\)-NOT-LABEL:/;\1-NOT:/" $TEMP
      sed -i '' "s/;\(.*\)-DAG-LABEL:/;\1-DAG:/" $TEMP
      mv $TEMP $NAME
    fi
  done


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186280 91177308-0d34-0410-b5e6-96231b3b80d8
2013-07-14 06:24:09 +00:00

115 lines
2.5 KiB
LLVM

; Test 32-bit arithmetic shifts right.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
; Check the low end of the SRA range.
define i32 @f1(i32 %a) {
; CHECK-LABEL: f1:
; CHECK: sra %r2, 1
; CHECK: br %r14
%shift = ashr i32 %a, 1
ret i32 %shift
}
; Check the high end of the defined SRA range.
define i32 @f2(i32 %a) {
; CHECK-LABEL: f2:
; CHECK: sra %r2, 31
; CHECK: br %r14
%shift = ashr i32 %a, 31
ret i32 %shift
}
; We don't generate shifts by out-of-range values.
define i32 @f3(i32 %a) {
; CHECK-LABEL: f3:
; CHECK-NOT: sra %r2, 32
; CHECK: br %r14
%shift = ashr i32 %a, 32
ret i32 %shift
}
; Make sure that we don't generate negative shift amounts.
define i32 @f4(i32 %a, i32 %amt) {
; CHECK-LABEL: f4:
; CHECK-NOT: sra %r2, -1{{.*}}
; CHECK: br %r14
%sub = sub i32 %amt, 1
%shift = ashr i32 %a, %sub
ret i32 %shift
}
; Check variable shifts.
define i32 @f5(i32 %a, i32 %amt) {
; CHECK-LABEL: f5:
; CHECK: sra %r2, 0(%r3)
; CHECK: br %r14
%shift = ashr i32 %a, %amt
ret i32 %shift
}
; Check shift amounts that have a constant term.
define i32 @f6(i32 %a, i32 %amt) {
; CHECK-LABEL: f6:
; CHECK: sra %r2, 10(%r3)
; CHECK: br %r14
%add = add i32 %amt, 10
%shift = ashr i32 %a, %add
ret i32 %shift
}
; ...and again with a truncated 64-bit shift amount.
define i32 @f7(i32 %a, i64 %amt) {
; CHECK-LABEL: f7:
; CHECK: sra %r2, 10(%r3)
; CHECK: br %r14
%add = add i64 %amt, 10
%trunc = trunc i64 %add to i32
%shift = ashr i32 %a, %trunc
ret i32 %shift
}
; Check shift amounts that have the largest in-range constant term. We could
; mask the amount instead.
define i32 @f8(i32 %a, i32 %amt) {
; CHECK-LABEL: f8:
; CHECK: sra %r2, 4095(%r3)
; CHECK: br %r14
%add = add i32 %amt, 4095
%shift = ashr i32 %a, %add
ret i32 %shift
}
; Check the next value up. Again, we could mask the amount instead.
define i32 @f9(i32 %a, i32 %amt) {
; CHECK-LABEL: f9:
; CHECK: ahi %r3, 4096
; CHECK: sra %r2, 0(%r3)
; CHECK: br %r14
%add = add i32 %amt, 4096
%shift = ashr i32 %a, %add
ret i32 %shift
}
; Check that we don't try to generate "indexed" shifts.
define i32 @f10(i32 %a, i32 %b, i32 %c) {
; CHECK-LABEL: f10:
; CHECK: ar {{%r3, %r4|%r4, %r3}}
; CHECK: sra %r2, 0({{%r[34]}})
; CHECK: br %r14
%add = add i32 %b, %c
%shift = ashr i32 %a, %add
ret i32 %shift
}
; Check that the shift amount uses an address register. It cannot be in %r0.
define i32 @f11(i32 %a, i32 *%ptr) {
; CHECK-LABEL: f11:
; CHECK: l %r1, 0(%r3)
; CHECK: sra %r2, 0(%r1)
; CHECK: br %r14
%amt = load i32 *%ptr
%shift = ashr i32 %a, %amt
ret i32 %shift
}