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view test/CodeGen/X86/zext-inreg-0.ll @ 33:e4204d083e25

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LLVM 3.5
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Thu, 12 Dec 2013 14:32:10 +0900
parents 95c75e76d11b
children 803732b1fca8
line wrap: on
line source

; RUN: llc < %s -march=x86 | FileCheck -check-prefix=X86 %s
; RUN: llc < %s -march=x86-64 | FileCheck -check-prefix=X64 %s

; X86-NOT: and

; X64-NOT: and
; X64-NOT: movzbq
; X64-NOT: movzwq
; X64-NOT: movzlq

; These should use movzbl instead of 'and 255'.
; This related to not having a ZERO_EXTEND_REG opcode.

define i32 @a(i32 %d) nounwind  {
        %e = add i32 %d, 1
        %retval = and i32 %e, 255
        ret i32 %retval
}
define i32 @b(float %d) nounwind  {
        %tmp12 = fptoui float %d to i8
        %retval = zext i8 %tmp12 to i32
        ret i32 %retval
}
define i32 @c(i32 %d) nounwind  {
        %e = add i32 %d, 1
        %retval = and i32 %e, 65535
        ret i32 %retval
}
define i64 @d(i64 %d) nounwind  {
        %e = add i64 %d, 1
        %retval = and i64 %e, 255
        ret i64 %retval
}
define i64 @e(i64 %d) nounwind  {
        %e = add i64 %d, 1
        %retval = and i64 %e, 65535
        ret i64 %retval
}
define i64 @f(i64 %d) nounwind  {
        %e = add i64 %d, 1
        %retval = and i64 %e, 4294967295
        ret i64 %retval
}

define i32 @g(i8 %d) nounwind  {
        %e = add i8 %d, 1
        %retval = zext i8 %e to i32
        ret i32 %retval
}
define i32 @h(i16 %d) nounwind  {
        %e = add i16 %d, 1
        %retval = zext i16 %e to i32
        ret i32 %retval
}
define i64 @i(i8 %d) nounwind  {
        %e = add i8 %d, 1
        %retval = zext i8 %e to i64
        ret i64 %retval
}
define i64 @j(i16 %d) nounwind  {
        %e = add i16 %d, 1
        %retval = zext i16 %e to i64
        ret i64 %retval
}
define i64 @k(i32 %d) nounwind  {
        %e = add i32 %d, 1
        %retval = zext i32 %e to i64
        ret i64 %retval
}