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; Test population-count instruction
;
; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z196 | FileCheck %s
declare i32 @llvm.ctpop.i32(i32 %a)
declare i64 @llvm.ctpop.i64(i64 %a)
define i32 @f1(i32 %a) {
; CHECK-LABEL: f1:
; CHECK: popcnt %r0, %r2
; CHECK: sllk %r1, %r0, 16
; CHECK: ar %r1, %r0
; CHECK: sllk %r2, %r1, 8
; CHECK: ar %r2, %r1
; CHECK: srl %r2, 24
; CHECK: br %r14
%popcnt = call i32 @llvm.ctpop.i32(i32 %a)
ret i32 %popcnt
}
define i32 @f2(i32 %a) {
; CHECK-LABEL: f2:
; CHECK: llhr %r0, %r2
; CHECK: popcnt %r0, %r0
; CHECK: risblg %r2, %r0, 16, 151, 8
; CHECK: ar %r2, %r0
; CHECK: srl %r2, 8
; CHECK: br %r14
%and = and i32 %a, 65535
%popcnt = call i32 @llvm.ctpop.i32(i32 %and)
ret i32 %popcnt
}
define i32 @f3(i32 %a) {
; CHECK-LABEL: f3:
; CHECK: llcr %r0, %r2
; CHECK: popcnt %r2, %r0
; CHECK: br %r14
%and = and i32 %a, 255
%popcnt = call i32 @llvm.ctpop.i32(i32 %and)
ret i32 %popcnt
}
define i64 @f4(i64 %a) {
; CHECK-LABEL: f4:
; CHECK: popcnt %r0, %r2
; CHECK: sllg %r1, %r0, 32
; CHECK: agr %r1, %r0
; CHECK: sllg %r0, %r1, 16
; CHECK: agr %r0, %r1
; CHECK: sllg %r1, %r0, 8
; CHECK: agr %r1, %r0
; CHECK: srlg %r2, %r1, 56
; CHECK: br %r14
%popcnt = call i64 @llvm.ctpop.i64(i64 %a)
ret i64 %popcnt
}
define i64 @f5(i64 %a) {
; CHECK-LABEL: f5:
; CHECK: llgfr %r0, %r2
; CHECK: popcnt %r0, %r0
; CHECK: sllg %r1, %r0, 16
; CHECK: algfr %r0, %r1
; CHECK: sllg %r1, %r0, 8
; CHECK: algfr %r0, %r1
; CHECK: srlg %r2, %r0, 24
%and = and i64 %a, 4294967295
%popcnt = call i64 @llvm.ctpop.i64(i64 %and)
ret i64 %popcnt
}
define i64 @f6(i64 %a) {
; CHECK-LABEL: f6:
; CHECK: llghr %r0, %r2
; CHECK: popcnt %r0, %r0
; CHECK: risbg %r1, %r0, 48, 183, 8
; CHECK: agr %r1, %r0
; CHECK: srlg %r2, %r1, 8
; CHECK: br %r14
%and = and i64 %a, 65535
%popcnt = call i64 @llvm.ctpop.i64(i64 %and)
ret i64 %popcnt
}
define i64 @f7(i64 %a) {
; CHECK-LABEL: f7:
; CHECK: llgcr %r0, %r2
; CHECK: popcnt %r2, %r0
; CHECK: br %r14
%and = and i64 %a, 255
%popcnt = call i64 @llvm.ctpop.i64(i64 %and)
ret i64 %popcnt
}
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