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|
; RUN: llc < %s -mtriple=i686-unknown-linux-gnu -fixup-byte-word-insts=0 | \
; RUN: FileCheck -check-prefix=CHECK -check-prefix=BWOFF %s
; RUN: llc < %s -mtriple=i686-unknown-linux-gnu -fixup-byte-word-insts=1 | \
; RUN: FileCheck -check-prefix=CHECK -check-prefix=BWON %s
; RUN: llc < %s -mtriple=x86_64-unknown-linux-gnu -fixup-byte-word-insts=0 | \
; RUN: FileCheck -check-prefix=CHECK -check-prefix=BWOFF %s
; RUN: llc < %s -mtriple=i686-unknown-linux-gnu -fixup-byte-word-insts=1 | \
; RUN: FileCheck -check-prefix=CHECK -check-prefix=BWON %s
; RUN: llc < %s -mtriple=x86_64-apple-darwin -fixup-byte-word-insts=0 | \
; RUN: FileCheck -check-prefix=DARWIN -check-prefix=DARWIN-BWOFF %s
; RUN: llc < %s -mtriple=x86_64-apple-darwin -fixup-byte-word-insts=1 | \
; RUN: FileCheck -check-prefix=DARWIN -check-prefix=DARWIN-BWON %s
@x = common global i32 0, align 4
define zeroext i1 @unsigned_i1() {
entry:
%0 = load i32, i32* @x
%cmp = icmp eq i32 %0, 42
ret i1 %cmp
; Unsigned i1 return values are not extended.
; CHECK-LABEL: unsigned_i1:
; CHECK: cmp
; CHECK-NEXT: sete
; CHECK-NEXT: ret
}
define zeroext i8 @unsigned_i8() {
entry:
%0 = load i32, i32* @x
%cmp = icmp eq i32 %0, 42
%retval = zext i1 %cmp to i8
ret i8 %retval
; Unsigned i8 return values are not extended.
; CHECK-LABEL: unsigned_i8:
; CHECK: cmp
; CHECK-NEXT: sete
; CHECK-NEXT: ret
; Except on Darwin, for legacy reasons.
; DARWIN-LABEL: unsigned_i8:
; DARWIN: xorl
; DARWIN-NEXT: cmp
; DARWIN-NEXT: sete
; DARWIN-NEXT: ret
}
define signext i8 @signed_i8() {
entry:
%0 = load i32, i32* @x
%cmp = icmp eq i32 %0, 42
%retval = zext i1 %cmp to i8
ret i8 %retval
; Signed i8 return values are not extended.
; CHECK-LABEL: signed_i8:
; CHECK: cmp
; CHECK-NEXT: sete
; CHECK-NEXT: ret
; Except on Darwin, for legacy reasons.
; DARWIN-LABEL: signed_i8:
; DARWIN: xorl
; DARWIN-NEXT: cmp
; DARWIN-NEXT: sete
; DARWIN-NEXT: ret
}
@a = common global i16 0
@b = common global i16 0
define zeroext i16 @unsigned_i16() {
entry:
%0 = load i16, i16* @a
%1 = load i16, i16* @b
%add = add i16 %1, %0
ret i16 %add
; i16 return values are not extended.
; CHECK-LABEL: unsigned_i16:
; BWOFF: movw
; BWON: movzwl
; CHECK-NEXT: addw
; CHECK-NEXT: ret
; Except on Darwin, for legacy reasons.
; DARWIN-LABEL: unsigned_i16:
; DARWIN-BWOFF: movw
; DARWIN-BWON: movzwl
; DARWIN-NEXT: addw
; DARWIN-NEXT: movzwl
; DARWIN-NEXT: ret
}
define i32 @use_i1() {
entry:
%0 = call i1 @unsigned_i1();
%1 = zext i1 %0 to i32
ret i32 %1
; The high 24 bits of %eax from a function returning i1 are undefined.
; CHECK-LABEL: use_i1:
; CHECK: call
; CHECK-NEXT: movzbl
; CHECK-NEXT: {{pop|add}}
; CHECK-NEXT: ret
}
define i32 @use_i8() {
entry:
%0 = call i8 @unsigned_i8();
%1 = zext i8 %0 to i32
ret i32 %1
; The high 24 bits of %eax from a function returning i8 are undefined.
; CHECK-LABEL: use_i8:
; CHECK: call
; CHECK-NEXT: movzbl
; CHECK-NEXT: {{pop|add}}
; CHECK-NEXT: ret
}
define i32 @use_i16() {
entry:
%0 = call i16 @unsigned_i16();
%1 = zext i16 %0 to i32
ret i32 %1
; The high 16 bits of %eax from a function returning i16 are undefined.
; CHECK-LABEL: use_i16:
; CHECK: call
; CHECK-NEXT: movzwl
; CHECK-NEXT: {{pop|add}}
; CHECK-NEXT: ret
}
|
