1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; 3; Test that the fls library call simplifier works correctly even for 4; targets with 16-bit int. Although fls is available on a number of 5; targets it's supported (hardcoded as available) only on FreeBSD. 6; 7; RUN: opt < %s -mtriple=avr-freebsd -passes=instcombine -S | FileCheck %s --check-prefix=AVR 8; RUN: opt < %s -mtriple=msp430-freebsd -passes=instcombine -S | FileCheck %s --check-prefix=MSP430 9; REQUIRES: avr-registered-target,msp430-registered-target 10 11declare i16 @fls(i16) 12 13declare void @sink(i16) 14 15 16define void @fold_fls(i16 %x) { 17; AVR-LABEL: @fold_fls( 18; AVR-NEXT: call addrspace(1) void @sink(i16 0) 19; AVR-NEXT: call addrspace(1) void @sink(i16 1) 20; AVR-NEXT: [[CTLZ:%.*]] = call range(i16 0, 17) addrspace(1) i16 @llvm.ctlz.i16(i16 [[X:%.*]], i1 false) 21; AVR-NEXT: [[NX:%.*]] = sub nuw nsw i16 16, [[CTLZ]] 22; AVR-NEXT: call addrspace(1) void @sink(i16 [[NX]]) 23; AVR-NEXT: ret void 24; 25; MSP430-LABEL: @fold_fls( 26; MSP430-NEXT: call void @sink(i16 0) 27; MSP430-NEXT: call void @sink(i16 1) 28; MSP430-NEXT: [[CTLZ:%.*]] = call range(i16 0, 17) i16 @llvm.ctlz.i16(i16 [[X:%.*]], i1 false) 29; MSP430-NEXT: [[NX:%.*]] = sub nuw nsw i16 16, [[CTLZ]] 30; MSP430-NEXT: call void @sink(i16 [[NX]]) 31; MSP430-NEXT: ret void 32; 33 %n0 = call i16 @fls(i16 0) 34 call void @sink(i16 %n0) 35 36 %n1 = call i16 @fls(i16 1) 37 call void @sink(i16 %n1) 38 39 %nx = call i16 @fls(i16 %x) 40 call void @sink(i16 %nx) 41 42 ret void 43} 44