llvm-6502/test/CodeGen/Mips/const-mult.ll
2013-07-01 20:18:58 +00:00

50 lines
1.3 KiB
LLVM

; RUN: llc -march=mipsel < %s | FileCheck %s -check-prefix=CHECK
; RUN: llc -march=mips64el -mcpu=mips64 < %s | FileCheck %s -check-prefix=CHECK
; RUN: llc -march=mips64el -mcpu=mips64 < %s | FileCheck %s -check-prefix=CHECK64
; CHECK: mul5_32:
; CHECK: sll $[[R0:[0-9]+]], $4, 2
; CHECK: addu ${{[0-9]+}}, $[[R0]], $4
define i32 @mul5_32(i32 %a) {
entry:
%mul = mul nsw i32 %a, 5
ret i32 %mul
}
; CHECK: mul27_32:
; CHECK-DAG: sll $[[R0:[0-9]+]], $4, 2
; CHECK-DAG: addu $[[R1:[0-9]+]], $[[R0]], $4
; CHECK-DAG: sll $[[R2:[0-9]+]], $4, 5
; CHECK: subu ${{[0-9]+}}, $[[R2]], $[[R1]]
define i32 @mul27_32(i32 %a) {
entry:
%mul = mul nsw i32 %a, 27
ret i32 %mul
}
; CHECK: muln2147483643_32:
; CHECK-DAG: sll $[[R0:[0-9]+]], $4, 2
; CHECK-DAG: addu $[[R1:[0-9]+]], $[[R0]], $4
; CHECK-DAG: sll $[[R2:[0-9]+]], $4, 31
; CHECK: addu ${{[0-9]+}}, $[[R2]], $[[R1]]
define i32 @muln2147483643_32(i32 %a) {
entry:
%mul = mul nsw i32 %a, -2147483643
ret i32 %mul
}
; CHECK64: muln9223372036854775805_64:
; CHECK64-DAG: dsll $[[R0:[0-9]+]], $4, 1
; CHECK64-DAG: daddu $[[R1:[0-9]+]], $[[R0]], $4
; CHECK64-DAG: dsll $[[R2:[0-9]+]], $4, 63
; CHECK64: daddu ${{[0-9]+}}, $[[R2]], $[[R1]]
define i64 @muln9223372036854775805_64(i64 %a) {
entry:
%mul = mul nsw i64 %a, -9223372036854775805
ret i64 %mul
}