derek.holloway
7502bf64a4
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30 lines
1.3 KiB
LLVM
30 lines
1.3 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
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; RUN: llc -mtriple=amdgcn--amdpal -mcpu=gfx1100 -mattr=+real-true16 < %s | FileCheck %s
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; Make sure that the 16-bit constant 0x3c00 isn't folded as 0 into
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; v_bfi_b32.
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define i32 @mov16_bfi_fold_regression(half %arg, i32 %arg1) {
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; CHECK-LABEL: mov16_bfi_fold_regression:
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; CHECK: ; %bb.0: ; %bb
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; CHECK-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
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; CHECK-NEXT: v_mov_b16_e32 v2.l, 0x3c00
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; CHECK-NEXT: v_cmp_ne_u32_e32 vcc_lo, 0, v1
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; CHECK-NEXT: s_delay_alu instid0(VALU_DEP_2) | instskip(NEXT) | instid1(VALU_DEP_1)
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; CHECK-NEXT: v_bfi_b32 v0, 0x7fff, v2, v0
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; CHECK-NEXT: v_cndmask_b16 v0.l, 0x3c00, v0.l, vcc_lo
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; CHECK-NEXT: s_delay_alu instid0(VALU_DEP_1)
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; CHECK-NEXT: v_cvt_u32_u16_e32 v0, v0.l
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; CHECK-NEXT: s_setpc_b64 s[30:31]
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bb:
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%cmp = icmp eq i32 %arg1, 0
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%call = call half @llvm.copysign.f16(half 0xH3C00, half %arg)
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%select = select i1 %cmp, half 0xH3C00, half %call
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%insertelement = insertelement <2 x half> zeroinitializer, half %select, i64 0
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%bitcast = bitcast <2 x half> %insertelement to i32
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ret i32 %bitcast
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}
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declare half @llvm.copysign.f16(half, half) #0
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attributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
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