third_party/llvm-7.0/llvm/test/CodeGen/X86/h-register-addressing-64.ll

; RUN: llc < %s -mtriple=x86_64-- -mattr=-bmi | FileCheck %s

; Use h-register extract and zero-extend.

define double @foo8(double* nocapture inreg %p, i64 inreg %x) nounwind readonly {
  %t0 = lshr i64 %x, 8
  %t1 = and i64 %t0, 255
  %t2 = getelementptr double, double* %p, i64 %t1
  %t3 = load double, double* %t2, align 8
  ret double %t3
}
; CHECK: foo8:
; CHECK: movzbl %{{[abcd]}}h, %e

define float @foo4(float* nocapture inreg %p, i64 inreg %x) nounwind readonly {
  %t0 = lshr i64 %x, 8
  %t1 = and i64 %t0, 255
  %t2 = getelementptr float, float* %p, i64 %t1
  %t3 = load float, float* %t2, align 8
  ret float %t3
}
; CHECK: foo4:
; CHECK: movzbl %{{[abcd]}}h, %e

define i16 @foo2(i16* nocapture inreg %p, i64 inreg %x) nounwind readonly {
  %t0 = lshr i64 %x, 8
  %t1 = and i64 %t0, 255
  %t2 = getelementptr i16, i16* %p, i64 %t1
  %t3 = load i16, i16* %t2, align 8
  ret i16 %t3
}
; CHECK: foo2:
; CHECK: movzbl %{{[abcd]}}h, %e

define i8 @foo1(i8* nocapture inreg %p, i64 inreg %x) nounwind readonly {
  %t0 = lshr i64 %x, 8
  %t1 = and i64 %t0, 255
  %t2 = getelementptr i8, i8* %p, i64 %t1
  %t3 = load i8, i8* %t2, align 8
  ret i8 %t3
}
; CHECK: foo1:
; CHECK: movzbl %{{[abcd]}}h, %e

define i8 @bar8(i8* nocapture inreg %p, i64 inreg %x) nounwind readonly {
  %t0 = lshr i64 %x, 5
  %t1 = and i64 %t0, 2040
  %t2 = getelementptr i8, i8* %p, i64 %t1
  %t3 = load i8, i8* %t2, align 8
  ret i8 %t3
}
; CHECK: bar8:
; CHECK: movzbl %{{[abcd]}}h, %e

define i8 @bar4(i8* nocapture inreg %p, i64 inreg %x) nounwind readonly {
  %t0 = lshr i64 %x, 6
  %t1 = and i64 %t0, 1020
  %t2 = getelementptr i8, i8* %p, i64 %t1
  %t3 = load i8, i8* %t2, align 8
  ret i8 %t3
}
; CHECK: bar4:
; CHECK: movzbl %{{[abcd]}}h, %e

define i8 @bar2(i8* nocapture inreg %p, i64 inreg %x) nounwind readonly {
  %t0 = lshr i64 %x, 7
  %t1 = and i64 %t0, 510
  %t2 = getelementptr i8, i8* %p, i64 %t1
  %t3 = load i8, i8* %t2, align 8
  ret i8 %t3
}
; CHECK: bar2:
; CHECK: movzbl %{{[abcd]}}h, %e
; CHECK: ret