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llvm-mirror/test/CodeGen/SystemZ/int-mul-06.ll
Stephen Lin 7e501cf4c3 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

llvm-svn: 186280
2013-07-14 06:24:09 +00:00

160 lines
3.5 KiB
LLVM

; Test 64-bit multiplication in which the second operand is constant.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
; Check multiplication by 2, which should use shifts.
define i64 @f1(i64 %a, i64 *%dest) {
; CHECK-LABEL: f1:
; CHECK: sllg %r2, %r2, 1
; CHECK: br %r14
%mul = mul i64 %a, 2
ret i64 %mul
}
; Check multiplication by 3.
define i64 @f2(i64 %a, i64 *%dest) {
; CHECK-LABEL: f2:
; CHECK: mghi %r2, 3
; CHECK: br %r14
%mul = mul i64 %a, 3
ret i64 %mul
}
; Check the high end of the MGHI range.
define i64 @f3(i64 %a, i64 *%dest) {
; CHECK-LABEL: f3:
; CHECK: mghi %r2, 32767
; CHECK: br %r14
%mul = mul i64 %a, 32767
ret i64 %mul
}
; Check the next value up, which should use shifts.
define i64 @f4(i64 %a, i64 *%dest) {
; CHECK-LABEL: f4:
; CHECK: sllg %r2, %r2, 15
; CHECK: br %r14
%mul = mul i64 %a, 32768
ret i64 %mul
}
; Check the next value up again, which can use MSGFI.
define i64 @f5(i64 %a, i64 *%dest) {
; CHECK-LABEL: f5:
; CHECK: msgfi %r2, 32769
; CHECK: br %r14
%mul = mul i64 %a, 32769
ret i64 %mul
}
; Check the high end of the MSGFI range.
define i64 @f6(i64 %a, i64 *%dest) {
; CHECK-LABEL: f6:
; CHECK: msgfi %r2, 2147483647
; CHECK: br %r14
%mul = mul i64 %a, 2147483647
ret i64 %mul
}
; Check the next value up, which should use shifts.
define i64 @f7(i64 %a, i64 *%dest) {
; CHECK-LABEL: f7:
; CHECK: sllg %r2, %r2, 31
; CHECK: br %r14
%mul = mul i64 %a, 2147483648
ret i64 %mul
}
; Check the next value up again, which cannot use a constant multiplicatoin.
define i64 @f8(i64 %a, i64 *%dest) {
; CHECK-LABEL: f8:
; CHECK-NOT: msgfi
; CHECK: br %r14
%mul = mul i64 %a, 2147483649
ret i64 %mul
}
; Check multiplication by -1, which is a negation.
define i64 @f9(i64 %a, i64 *%dest) {
; CHECK-LABEL: f9:
; CHECK: lcgr {{%r[0-5]}}, %r2
; CHECK: br %r14
%mul = mul i64 %a, -1
ret i64 %mul
}
; Check multiplication by -2, which should use shifts.
define i64 @f10(i64 %a, i64 *%dest) {
; CHECK-LABEL: f10:
; CHECK: sllg [[SHIFTED:%r[0-5]]], %r2, 1
; CHECK: lcgr %r2, [[SHIFTED]]
; CHECK: br %r14
%mul = mul i64 %a, -2
ret i64 %mul
}
; Check multiplication by -3.
define i64 @f11(i64 %a, i64 *%dest) {
; CHECK-LABEL: f11:
; CHECK: mghi %r2, -3
; CHECK: br %r14
%mul = mul i64 %a, -3
ret i64 %mul
}
; Check the lowest useful MGHI value.
define i64 @f12(i64 %a, i64 *%dest) {
; CHECK-LABEL: f12:
; CHECK: mghi %r2, -32767
; CHECK: br %r14
%mul = mul i64 %a, -32767
ret i64 %mul
}
; Check the next value down, which should use shifts.
define i64 @f13(i64 %a, i64 *%dest) {
; CHECK-LABEL: f13:
; CHECK: sllg [[SHIFTED:%r[0-5]]], %r2, 15
; CHECK: lcgr %r2, [[SHIFTED]]
; CHECK: br %r14
%mul = mul i64 %a, -32768
ret i64 %mul
}
; Check the next value down again, which can use MSGFI.
define i64 @f14(i64 %a, i64 *%dest) {
; CHECK-LABEL: f14:
; CHECK: msgfi %r2, -32769
; CHECK: br %r14
%mul = mul i64 %a, -32769
ret i64 %mul
}
; Check the lowest useful MSGFI value.
define i64 @f15(i64 %a, i64 *%dest) {
; CHECK-LABEL: f15:
; CHECK: msgfi %r2, -2147483647
; CHECK: br %r14
%mul = mul i64 %a, -2147483647
ret i64 %mul
}
; Check the next value down, which should use shifts.
define i64 @f16(i64 %a, i64 *%dest) {
; CHECK-LABEL: f16:
; CHECK: sllg [[SHIFTED:%r[0-5]]], %r2, 31
; CHECK: lcgr %r2, [[SHIFTED]]
; CHECK: br %r14
%mul = mul i64 %a, -2147483648
ret i64 %mul
}
; Check the next value down again, which cannot use constant multiplication
define i64 @f17(i64 %a, i64 *%dest) {
; CHECK-LABEL: f17:
; CHECK-NOT: msgfi
; CHECK: br %r14
%mul = mul i64 %a, -2147483649
ret i64 %mul
}