bool-simplify.ll   [plain text]

; RUN: llc < %s -march=x86-64 -mattr=+sse41,-avx,+rdrand | FileCheck %s

define i32 @foo(<2 x i64> %c, i32 %a, i32 %b) {
  %t1 = call i32 @llvm.x86.sse41.ptestz(<2 x i64> %c, <2 x i64> %c)
  %t2 = icmp ne i32 %t1, 0
  %t3 = select i1 %t2, i32 %a, i32 %b
  ret i32 %t3
; CHECK: foo
; CHECK: ptest
; CHECK-NOT: testl
; CHECK: cmov
; CHECK: ret
}

define i32 @bar(<2 x i64> %c) {
entry:
  %0 = call i32 @llvm.x86.sse41.ptestz(<2 x i64> %c, <2 x i64> %c)
  %1 = icmp ne i32 %0, 0
  br i1 %1, label %if-true-block, label %endif-block
if-true-block:                                    ; preds = %entry
  ret i32 0
endif-block:                                      ; preds = %entry,
  ret i32 1
; CHECK: bar
; CHECK: ptest
; CHECK-NOT: testl
; CHECK: jne
; CHECK: ret
}

define i32 @bax(<2 x i64> %c) {
  %t1 = call i32 @llvm.x86.sse41.ptestz(<2 x i64> %c, <2 x i64> %c)
  %t2 = icmp eq i32 %t1, 1
  %t3 = zext i1 %t2 to i32
  ret i32 %t3
; CHECK: bax
; CHECK: ptest
; CHECK-NOT: cmpl
; CHECK: ret
}

define i32 @rnd(i32 %arg) nounwind uwtable {
  %1 = tail call { i32, i32 } @llvm.x86.rdrand.32() nounwind
  %2 = extractvalue { i32, i32 } %1, 0
  %3 = extractvalue { i32, i32 } %1, 1
  %4 = icmp eq i32 %3, 0
  %5 = select i1 %4, i32 0, i32 %arg
  %6 = add i32 %5, %2
  ret i32 %6
; CHECK: rnd
; CHECK: rdrand
; CHECK: cmov
; CHECK-NOT: cmov
; CHECK: ret
}

declare i32 @llvm.x86.sse41.ptestz(<2 x i64>, <2 x i64>) nounwind readnone
declare { i32, i32 } @llvm.x86.rdrand.32() nounwind