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1; RUN: llc <%s -mtriple=arm64ec-pc-windows-msvc 2>&1 | FileCheck %s2 3; Check that we warn that x13, x14, x23, x24, x28 and float regs v16-v314; will be clobbered on Arm64EC. With a note explaining the reason.5 6; CHECK: warning: inline asm clobber list contains reserved registers: X13, X14, X23, X24, X287; CHECK-NEXT: note: Reserved registers on the clobber list may not be preserved across the asm statement, and clobbering them may lead to undefined behaviour.8; CHECK-NEXT: note: x13 is clobbered by asynchronous signals when using Arm64EC.9; CHECK-NEXT: note: x14 is clobbered by asynchronous signals when using Arm64EC.10; CHECK-NEXT: note: x23 is clobbered by asynchronous signals when using Arm64EC.11; CHECK-NEXT: note: x24 is clobbered by asynchronous signals when using Arm64EC.12; CHECK-NEXT: note: x28 is clobbered by asynchronous signals when using Arm64EC.13 14define void @fn_x() {15entry:16 call void asm sideeffect "nop", "~{x13},~{x14},~{x23},~{x24},~{x28}"()17 ret void18}19 20; CHECK: warning: inline asm clobber list contains reserved registers: W13, W14, W23, W24, W2821; CHECK-NEXT: note: Reserved registers on the clobber list may not be preserved across the asm statement, and clobbering them may lead to undefined behaviour.22; CHECK-NEXT: note: w13 is clobbered by asynchronous signals when using Arm64EC.23; CHECK-NEXT: note: w14 is clobbered by asynchronous signals when using Arm64EC.24; CHECK-NEXT: note: w23 is clobbered by asynchronous signals when using Arm64EC.25; CHECK-NEXT: note: w24 is clobbered by asynchronous signals when using Arm64EC.26; CHECK-NEXT: note: w28 is clobbered by asynchronous signals when using Arm64EC.27 28define void @fn_w() {29entry:30 call void asm sideeffect "nop", "~{w13},~{w14},~{w23},~{w24},~{w28}"()31 ret void32}33 34; CHECK: warning: inline asm clobber list contains reserved registers: Q16, Q17, Q18, Q19, Q20, Q21, Q22, Q23, Q24, Q25, Q26, Q27, Q28, Q29, Q30, Q3135; CHECK-NEXT: note: Reserved registers on the clobber list may not be preserved across the asm statement, and clobbering them may lead to undefined behaviour.36; CHECK-NEXT: note: q16 is clobbered by asynchronous signals when using Arm64EC.37; CHECK-NEXT: note: q17 is clobbered by asynchronous signals when using Arm64EC.38; CHECK-NEXT: note: q18 is clobbered by asynchronous signals when using Arm64EC.39; CHECK-NEXT: note: q19 is clobbered by asynchronous signals when using Arm64EC.40; CHECK-NEXT: note: q20 is clobbered by asynchronous signals when using Arm64EC.41; CHECK-NEXT: note: q21 is clobbered by asynchronous signals when using Arm64EC.42; CHECK-NEXT: note: q22 is clobbered by asynchronous signals when using Arm64EC.43; CHECK-NEXT: note: q23 is clobbered by asynchronous signals when using Arm64EC.44; CHECK-NEXT: note: q24 is clobbered by asynchronous signals when using Arm64EC.45; CHECK-NEXT: note: q25 is clobbered by asynchronous signals when using Arm64EC.46; CHECK-NEXT: note: q26 is clobbered by asynchronous signals when using Arm64EC.47; CHECK-NEXT: note: q27 is clobbered by asynchronous signals when using Arm64EC.48; CHECK-NEXT: note: q28 is clobbered by asynchronous signals when using Arm64EC.49; CHECK-NEXT: note: q29 is clobbered by asynchronous signals when using Arm64EC.50; CHECK-NEXT: note: q30 is clobbered by asynchronous signals when using Arm64EC.51; CHECK-NEXT: note: q31 is clobbered by asynchronous signals when using Arm64EC.52 53; Aka "Q" registers.54define void @fn_float_v() {55entry:56 call void asm sideeffect "nop", "~{v16},~{v17},~{v18},~{v19},~{v20},~{v21},~{v22},~{v23},~{v24},~{v25},~{v26},~{v27},~{v28},~{v29},~{v30},~{v31}"()57 ret void58}59 60; CHECK: warning: inline asm clobber list contains reserved registers: D16, D17, D18, D19, D20, D21, D22, D23, D24, D25, D26, D27, D28, D29, D30, D3161; CHECK-NEXT: note: Reserved registers on the clobber list may not be preserved across the asm statement, and clobbering them may lead to undefined behaviour.62; CHECK-NEXT: note: d16 is clobbered by asynchronous signals when using Arm64EC.63; CHECK-NEXT: note: d17 is clobbered by asynchronous signals when using Arm64EC.64; CHECK-NEXT: note: d18 is clobbered by asynchronous signals when using Arm64EC.65; CHECK-NEXT: note: d19 is clobbered by asynchronous signals when using Arm64EC.66; CHECK-NEXT: note: d20 is clobbered by asynchronous signals when using Arm64EC.67; CHECK-NEXT: note: d21 is clobbered by asynchronous signals when using Arm64EC.68; CHECK-NEXT: note: d22 is clobbered by asynchronous signals when using Arm64EC.69; CHECK-NEXT: note: d23 is clobbered by asynchronous signals when using Arm64EC.70; CHECK-NEXT: note: d24 is clobbered by asynchronous signals when using Arm64EC.71; CHECK-NEXT: note: d25 is clobbered by asynchronous signals when using Arm64EC.72; CHECK-NEXT: note: d26 is clobbered by asynchronous signals when using Arm64EC.73; CHECK-NEXT: note: d27 is clobbered by asynchronous signals when using Arm64EC.74; CHECK-NEXT: note: d28 is clobbered by asynchronous signals when using Arm64EC.75; CHECK-NEXT: note: d29 is clobbered by asynchronous signals when using Arm64EC.76; CHECK-NEXT: note: d30 is clobbered by asynchronous signals when using Arm64EC.77; CHECK-NEXT: note: d31 is clobbered by asynchronous signals when using Arm64EC.78 79define void @fn_float_d() {80entry:81 call void asm sideeffect "nop", "~{d16},~{d17},~{d18},~{d19},~{d20},~{d21},~{d22},~{d23},~{d24},~{d25},~{d26},~{d27},~{d28},~{d29},~{d30},~{d31}"()82 ret void83}84 85; CHECK: warning: inline asm clobber list contains reserved registers: S16, S17, S18, S19, S20, S21, S22, S23, S24, S25, S26, S27, S28, S29, S30, S3186; CHECK-NEXT: note: Reserved registers on the clobber list may not be preserved across the asm statement, and clobbering them may lead to undefined behaviour.87; CHECK-NEXT: note: s16 is clobbered by asynchronous signals when using Arm64EC.88; CHECK-NEXT: note: s17 is clobbered by asynchronous signals when using Arm64EC.89; CHECK-NEXT: note: s18 is clobbered by asynchronous signals when using Arm64EC.90; CHECK-NEXT: note: s19 is clobbered by asynchronous signals when using Arm64EC.91; CHECK-NEXT: note: s20 is clobbered by asynchronous signals when using Arm64EC.92; CHECK-NEXT: note: s21 is clobbered by asynchronous signals when using Arm64EC.93; CHECK-NEXT: note: s22 is clobbered by asynchronous signals when using Arm64EC.94; CHECK-NEXT: note: s23 is clobbered by asynchronous signals when using Arm64EC.95; CHECK-NEXT: note: s24 is clobbered by asynchronous signals when using Arm64EC.96; CHECK-NEXT: note: s25 is clobbered by asynchronous signals when using Arm64EC.97; CHECK-NEXT: note: s26 is clobbered by asynchronous signals when using Arm64EC.98; CHECK-NEXT: note: s27 is clobbered by asynchronous signals when using Arm64EC.99; CHECK-NEXT: note: s28 is clobbered by asynchronous signals when using Arm64EC.100; CHECK-NEXT: note: s29 is clobbered by asynchronous signals when using Arm64EC.101; CHECK-NEXT: note: s30 is clobbered by asynchronous signals when using Arm64EC.102; CHECK-NEXT: note: s31 is clobbered by asynchronous signals when using Arm64EC.103 104define void @fn_float_s() {105entry:106 call void asm sideeffect "nop", "~{s16},~{s17},~{s18},~{s19},~{s20},~{s21},~{s22},~{s23},~{s24},~{s25},~{s26},~{s27},~{s28},~{s29},~{s30},~{s31}"()107 ret void108}109 110; CHECK: warning: inline asm clobber list contains reserved registers: H16, H17, H18, H19, H20, H21, H22, H23, H24, H25, H26, H27, H28, H29, H30, H31111; CHECK-NEXT: note: Reserved registers on the clobber list may not be preserved across the asm statement, and clobbering them may lead to undefined behaviour.112; CHECK-NEXT: note: h16 is clobbered by asynchronous signals when using Arm64EC.113; CHECK-NEXT: note: h17 is clobbered by asynchronous signals when using Arm64EC.114; CHECK-NEXT: note: h18 is clobbered by asynchronous signals when using Arm64EC.115; CHECK-NEXT: note: h19 is clobbered by asynchronous signals when using Arm64EC.116; CHECK-NEXT: note: h20 is clobbered by asynchronous signals when using Arm64EC.117; CHECK-NEXT: note: h21 is clobbered by asynchronous signals when using Arm64EC.118; CHECK-NEXT: note: h22 is clobbered by asynchronous signals when using Arm64EC.119; CHECK-NEXT: note: h23 is clobbered by asynchronous signals when using Arm64EC.120; CHECK-NEXT: note: h24 is clobbered by asynchronous signals when using Arm64EC.121; CHECK-NEXT: note: h25 is clobbered by asynchronous signals when using Arm64EC.122; CHECK-NEXT: note: h26 is clobbered by asynchronous signals when using Arm64EC.123; CHECK-NEXT: note: h27 is clobbered by asynchronous signals when using Arm64EC.124; CHECK-NEXT: note: h28 is clobbered by asynchronous signals when using Arm64EC.125; CHECK-NEXT: note: h29 is clobbered by asynchronous signals when using Arm64EC.126; CHECK-NEXT: note: h30 is clobbered by asynchronous signals when using Arm64EC.127; CHECK-NEXT: note: h31 is clobbered by asynchronous signals when using Arm64EC.128 129define void @fn_float_h() {130entry:131 call void asm sideeffect "nop", "~{h16},~{h17},~{h18},~{h19},~{h20},~{h21},~{h22},~{h23},~{h24},~{h25},~{h26},~{h27},~{h28},~{h29},~{h30},~{h31}"()132 ret void133}134 135; llvm does not currently handle the B registers so they are not tested.136