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cfc303a827
Using `clr reg`/`mov %g0, reg`/`or %g0, %g0, reg` to zero a register looks much better than `sethi 0, reg`. Reviewers: jyknight, venkatra Reviewed By: jyknight Subscribers: eraman, fedor.sergeev, jrtc27, llvm-commits Differential Revision: https://reviews.llvm.org/D45810 llvm-svn: 330396
47 lines
1019 B
LLVM
47 lines
1019 B
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -mtriple=sparc | FileCheck %s -check-prefix=SPARC
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; Materializing constants
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define i32 @zero() nounwind {
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; SPARC-LABEL: zero:
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; SPARC: ! %bb.0:
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; SPARC-NEXT: retl
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; SPARC-NEXT: mov %g0, %o0
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ret i32 0
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}
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define i32 @pos_small() nounwind {
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; SPARC-LABEL: pos_small:
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; SPARC: ! %bb.0:
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; SPARC-NEXT: retl
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; SPARC-NEXT: mov 2047, %o0
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ret i32 2047
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}
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define i32 @neg_small() nounwind {
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; SPARC-LABEL: neg_small:
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; SPARC: ! %bb.0:
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; SPARC-NEXT: retl
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; SPARC-NEXT: mov -2047, %o0
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ret i32 -2047
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}
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define i32 @pos_i32() nounwind {
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; SPARC-LABEL: pos_i32:
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; SPARC: ! %bb.0:
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; SPARC-NEXT: sethi 1695242, %o0
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; SPARC-NEXT: retl
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; SPARC-NEXT: or %o0, 751, %o0
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ret i32 1735928559
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}
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define i32 @neg_i32() nounwind {
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; SPARC-LABEL: neg_i32:
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; SPARC: ! %bb.0:
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; SPARC-NEXT: sethi 3648367, %o0
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; SPARC-NEXT: retl
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; SPARC-NEXT: or %o0, 751, %o0
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ret i32 -559038737
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}
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